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RELATIONSHIPS
BETWEEN BANNISTER’S INTENSITY AND CONSISTENCY IN VERBAL AND NON-VERBAL GRIDS
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Miroslav Filip1, Marie Kovarova2, Tomas Urbanek1
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1Institute of Psychology, Academy of Sciences, Brno,
Czech Republic
2Masaryk University, Brno, Czech Republic
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Abstract
This article
investigates relationships between verbal and non-verbal equivalents of
Bannister’s intensity and consistency. It recalls a variant of a grid technique
that enables one to construct parallel verbal and non-verbal versions. The
obtained non-verbal measures indicate lower tightness than verbal measures.
Both types of measures correlate significantly with each other. This
convergence of verbal and non-verbal construing is interpreted in accordance
with the so called ‘generality hypothesis.’ An analysis of relationships
between verbal intensity and verbal consistency shows their nonlinear
relationships. The current results are compared with previous findings and the
question of validity of the measures is discussed.
Keywords:
Bannister’s intensity, non-verbal grids, non-verbal construing, consistency,
projective techniques.
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INTRODUCTION
Bannister’s
indexes of intensity and consistency are classical summary measures of the
structure of construct systems. Numerous studies have investigated and
discussed their theoretical and empirical relevance. To date, nearly all of
them have derived intensity and consistency from verbal variants of grids. This
is characteristic for the investigation of other grid measures as well. This
study attempts to take into consideration non-verbal variants of intensity and
consistency, which may in turn serve as a reflection of general relationships
between verbal and non-verbal construing.
THEORY
Bannister’s intensity – background
Bannister’s
intensity is usually mentioned as a summary grid measure based on correlations
among constructs (e.g. Fransella, Bell & Bannister, 2004). This may imply
that this measure is derived from a grid consisting of elements and bipolar
constructs. Although this is the case of many studies (e.g. Adams-Webber, 2003; Baldauf, Cron
& Grossenbacher, 2010; Dingemans, Space & Cromwell, 1983; Epting,
Prichard, Wiggins, Leonard & Beagle, 1992; Krauthauser, Bassler &
Potratz, 1994; Smith, 2000), pioneering studies were different. Bannister (1960, 1962) and Bannister and Fransella (1966)
originally proposed the measurement of intensity through grids consisting of
elements in columns (e.g. persons) and their separate mono-polar
characteristics (e.g. good, selfish) instead of bipolar constructs
(e.g. good versus selfish) in rows.
Bannister
(1960, 962) assumed that the characteristics of elements label poles of bipolar
constructs (e.g. good may label one pole
of the construct good versus selfish). Therefore he termed them constructs even though they do not
express explicitly bipolar relationships. This may be confusing because this
term in the psychology of personal constructs (PCP) implies a bipolar structure.
In order to clarify the terminology we will call the characteristics not
constructs but attributes.
Furthermore, we will call the elements/attributes form of grids the mono-polar grids in order to distinguish
it from the classical bipolar grids.
Data of
mono-polar grids can be binary (i.e., a respondent determines which elements
from a list possess a particular attribute; e.g. Bannister, 1960, 1962) or
ordinal (i.e., a respondent ranks a set of elements in respect to possessing an
attribute; e.g. Bannister & Fransella, 1966). Table 1 shows an example of a
mono-polar grid with binary data. Crosses denote that a given element possesses
a given attribute, blanks mean the opposite.
Mono-polar grids are still used from time to time, both in research and
in practice. However, the method of dealing with data differs from Bannister’s
original approach. For example, Ravenette (2003) described an original variant
for a work with children consisting of drawings of faces as attributes and
important others as elements. He used cluster analysis for obtaining a
structure of the construct system. Gara, Rosenberg and Mueller (1989) used a
mono-polar grid in an investigation of constructions of self. However, they did
not link this method with the fundamental assumption of bipolarity of personal
constructs and analyzed data in order to gain a structure of mono-polar
concepts.
General
assumptions of Bannister’s analyses of mono-polar grids are that attributes
with identical row patterns match in characterization of persons and refer to
one pole of the presumed construct (e.g. kind,
good in Table 1). Attributes with
inverse row patterns have opposite meanings and refer to contrast poles of the
construct (e.g. good, selfish). Attributes the rows of which
are neither identical nor inverse (e.g. selfish,
generous) do not have such
‘intensive’ relationships and refer to different constructs.
Table 1:
Example of a monopolar grid
|
Self |
Best friend |
Boss |
Partner |
Total |
kind |
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x
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x
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2
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good |
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x
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x
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2
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selfish |
x
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x
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2
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generous |
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x
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x
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2
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The level
of matching and inverse matching of any two attributes in the mono-polar grid
with binary data is expressed as a unique index – the split matching score
(Bannister, 1960, 1962). The algorithm utilizes the fact that, in the mentioned
studies, raw patterns have a constant sum which is a half of the whole set of
elements (in the presented example, all rows have a constant sum 2; see Table
1). This was determined by an instruction when a respondent was given an
attribute (e.g. kind) and he or she was
asked to select a half of the elements (persons on photographs) possessing this
attribute (i.e. two of the four elements in the presented example). Then, the
same procedure was repeated by another attribute and so on until all attributes
were evaluated.
For
computing the split matching score, a matrix with a simple matching index was
determined. This matrix contained elements in columns and pairs of attributes
in rows (see Table 2). Matching scores represent a simple measure of
association between attributes. A cross in the table denotes an existing
association between attributes – any case when two attributes are
simultaneously related to a given element or are simultaneously not related to
a given element (e.g. both kind and good are related to ‘best friend’ and
are not related to ‘self’). The other cases – when just one attribute from a
pair is related to an element – are represented by blanks, which corresponds
with an absence of association between attributes (e.g. selfish is related and good
is not related to ‘self’). The matching scores are row totals.
Table 2:
Matrix with matching scores
|
Self |
Best friend |
Boss |
Partner |
Matching score |
Split matching score |
kind – good |
x
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x
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x
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x
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4
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2
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kind – selfish |
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0
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2
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kind – generous |
x
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x
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2
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0
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good – selfish |
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0
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2
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good – generous |
x
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x
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2
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0
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selfish – generous |
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x
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x
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2
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0
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Considering
Table 2 it is obvious that identical row patterns in Table 1 yield a maximum
matching score (4), inverse patterns yield no match (0), and the other pairs
yield a value in the middle (2).
The
binomial chance expectancy for a matching score on a 4-element grid is 2. This
corresponds to a random grid where attributes are not associated and they do
not form bipolar constructs. The split matching score is determined as a
deviation from this value; it is an absolute value of a difference between the
matching score and 2 (chance expectancy). The higher the value, the stronger
the relationships between attributes. Finally, intensity for the whole grid is
calculated as a sum of split matching scores (i.e. 6 for Table 2).
In
mono-polar grids with rank orderings, the relationships among attributes are
expressed as Spearman’s rhos calculated for each pair of attributes. These rhos
are squared and multiplied by 100. The sum of these scores is again interpreted
as intensity (e.g. Bannister & Fransella, 1966).
This
correlation approach can be applied not only to mono-polar grids but also to
standard grids with bipolar constructs containing rank orderings. The
difference is that in this case intensity is based on correlations among
bipolar constructs, not among mono-polar attributes (e.g. Dingemans et al.,
1983).
Bannister’s consistency – background
Simultaneously
with intensity Bannister (1960, 1962) introduced a measure of consistency.
Consistency is a correlation of construct structures identified in an initial
test and in a subsequent re-test. For example, in Bannister (1960, 1962) split
matching scores of attributes in the first grid are correlated with their
equivalents obtained in a re-test. In Bannister and Fransella (1966) and in
Bannister, Fransella & Agnew (1971), where mono-polar grids with ordinal
data are used, initial and re-test structures of attributes expressed as
Spearman rank order correlations are correlated.
In the
earlier studies the re-test contained different elements from the initial test
(e.g. Bannister, 1960, 1962). In other studies the re-test and initial test
were identical (e.g. Bannister & Fransella, 1966; Bannister, Fransella
& Agnew, 1971). Both approaches aim to determine the same measure of
consistency although their procedures differ
considerably. The former index expresses to what extent a construct structure
applied on one set of elements is used on the other. The latter index
determines a stability of a construct structure when the same grid is exposed
once again. Consistency in this latter form is held to this day (e.g. Fransella
et al., 2004). The difference between both approaches is important and is
reflected sufficiently neither by the mentioned authors nor by secondary
literature (Fransella et al, 2004).
Similar as
intensity, consistency may be derived both from mono-polar (e.g. Bannister,
1960, 1962, Bannister & Fransella, 1966; Bannister, Fransella & Agnew,
1971) and bipolar grids (e.g. Feixas, Moliner, Montes, Mari & Neimeyer,
1992). In the latter case structures of bipolar constructs (and not of
mono-polar attributes) obtained in the initial test and re-test are correlated.
Relationships between intensity and consistency
Regarding
the method of calculation, intensity reflects strength of relationship among
constructs. In PCP terms the intensity score is often interpreted as a measure
of cognitive complexity (e.g. Adams-Webber,
2003; Baldauf, Cron & Grossenbacher, 2010; Epting, Prichard,
Wiggins, Leonard & Beagle, 1992; Krauthauser, Bassler & Potratz, 1994;
Smith, 2000). However, Bannister proposed intensity originally for measuring tightness of a construct system (as
opposed to looseness; Bannister,
1960, 1962).
By
definition tight constructs lead to unvarying predictions (Kelly, 2001).
Construct systems with a high degree of intensity lead to unvarying predictions
because categorization within one attribute implies categorization within other
attributes. Following Bannister’s (1962) argument, if ‘the best friend’ was
categorized as kind, he/she is also
categorized as good because the two
attributes have identical patterns (Table 1). On the other hand, ‘loosening’ is
connected with a decrease of intensity. If ‘the best friend’ was categorized
occasionally once as kind and once as
not kind (e.g. selfish), the
relationship between the two row patterns becomes changing and unstable. Then,
to construe ‘the best friend’ as kind
does not imply to construe him/her as good
any more. Thus, the varying use of one attribute leads to the weakening of
relationships with other attributes, to a decrease in intensity.
Bannister
and his collaborators reported in the above-mentioned papers correlations
between intensity and consistency usually higher than 0.5, which is in
accordance with the theory. This interpretation of intensity as ‘tightness’ is
supported also by experimental findings (Bannister, 1963, 1965).
However,
other authors put emphasis on distinct interpretations of both measures. Haynes
and Phillips (1973) asserted that consistency is a direct and more accurate
measure of tightness than intensity because it affects its fundamental aspect –
the absence of variation. They supported this claim empirically. Similarly, Dingemans,
Space and Cromwell (1983) argued that consistency is a proper measure of
tightness because it fits well with Kelly’s definition mentioned above, which
cannot be said about intensity.
The
ambiguity in the interpretation of both measures may also stem from the fact
that intensity describes a construct structure at a particular time while
consistency describes a change between two grids over time (i.e. it identifies
a process).
Intensity and consistency derived from verbal
and non-verbal constructs
PCP
reflects, as many other theories of personality and psychotherapeutic
approaches, a distinction between verbally and non-verbally structured
experiences. The interest in exploration of non-verbal experiences or non-verbal
constructs is motivated by various reasons. For instance, children may express
their construing more easily through drawings than through words (e.g. Bell
& Bell, 2008; Butler & Green, 2007). The work with non-verbal material
also has a place in work with adults. According to Kelly (2001) important
levels of our construing are preverbal, which means that they were formed
before language acquisition. These constructs may be better accessible through non-verbal
stimuli. Kelly (2001) also mentions work with dreams as a possible way of
producing loosening or painting as a technique producing dilation. In general,
using non-verbal material may serve as a source of inspiration, as a tool for
expressing the ‘inexpressible’ or as a facilitator of loosening and creative
reconstruction.
These
theses are somewhat simplified. Verbal artifacts, such as poems, may express
the inexpressible and be a source of inspiration and creativity, as well. The
psychoanalytical verbal technique of chain association may produce loosening
(Kelly, 2001), similar to the work with dream images. On the other hand, a non-verbal
artifact such as a schematic sign of a tree may bear nearly the same trivial
meaning as a verbal sign ‘tree’. Thus, the distinction between verbal and non-verbal
should not be interpreted too literally. The sort and the nature of verbal or non-verbal
material and the way how we deal with it is important, as well. Various authors
put emphasis on work with non-verbal material because they acknowledge its
great potential to facilitate creativity and to deal with hardly accessible
levels of experience or construing.
The
tradition of research with grids is strongly restricted to verbal construing.
There are attempts to use constructivist measures to describe non-verbal
construing (e.g. constriction – Hannieh & Walker, 2007). Nevertheless, such
studies do not systematically compare verbal measures with their non-verbal
equivalents. The reason may be due to an incomparability of procedures of
eliciting non-verbal constructs (e.g. work with drawings – e.g. Bell &
Bell, 2008, dream analysis – e.g. Kelly, 2001) with procedures of eliciting
verbal constructs (typically through grid tasks).
Mono-polar
grids are suitable tools for diagnostics of both verbal and non-verbal
construct systems in comparable ways. They enable one to construct parallel versions
with verbal and non-verbal attributes that have equivalent instruction,
equivalent data structure, and equivalent principles of data analyses.
In this
paper dealing with verbal attributes on the one hand and with non-verbal
attributes on the other during the administration of mono-polar grids is
investigated. The verbal attributes are adjectives with relatively explicit and
shared meanings (e.g. kind, mean). On the contrary, the non-verbal
attributes are constructed to have an opposite ‘projective’ nature – they are
vague, poorly structured and bear no explicit or shared meaning. As this
article considers intensity and consistency at both verbal and non-verbal aspects,
it is necessary to postulate their hypothetical relationships.
The first
question is how levels of verbal and non-verbal indexes should differ. It was
already argued that using non-verbal material can produce loosening. Moreover,
the attributes in non-verbal grids in the current study do not bear any
definite or stereotypical meanings; they may be interpreted in many ways that
may, in fact, vary through the test completion. This implies that non-verbal
intensity and consistency should be lower than respective verbal indexes,
especially when intensity and consistency are regarded as the measures of
tightness.
The second
question is whether the verbal and non-verbal measures should converge. This
issue relates to the problem of generality of structural features of construct
systems. In the PCP literature two alternatives are considered. First, it is
possible to interpret these features as general tendencies that are comparable
to traits or cognitive styles. For instance, a person who construes elements
highly consistently in the verbal level should tend to do the same also in the non-verbal
level. Bieri and Blacker (1956) provided evidence for this hypothesis. They
found a convergence between Bieri’s complexity measure of construing people in the
Repertory Grid and complexity of perception of Rorschach inkblots. On the other
hand, several studies (Bannister & Salmon, 1966; McPherson, Armstrong &
Heather, 1975, 1978; Van den Bergh, De Boeck & Claeys, 1985) found that
construing of physical objects and people in terms of intensity and consistency
differs considerably. In the current study only levels of construing (verbal – non-verbal)
and not kinds of elements (people – objects) are manipulated. Correlations of
verbal and non-verbal indexes would support the generality hypothesis.
SAMPLE
The sample
(originally tested as a control group in a clinical project) was composed of 37
volunteer respondents (19 women, 18 men), graduate and undergraduate students
of social sciences. The average age was 22.81 (SD = 1.81), ranging from 20 to
27 years.
METHOD
Four
versions of mono-polar grid tests with binary data were created through a
combination of two different sets of elements – one for initial tests, one for
re-tests – and of two sets of supplied attributes – one for non-verbal and one
for verbal versions. Each set of elements consisted of 8 photo portraits
(faces) of adult persons (4 male, 4 female) unknown to the respondents [1]. The
elements within each set were administered to each respondent in a fixed order.
The set of
verbal attributes contained 16 verbal adjectives: generous, unusual, unreliable, mean, good, kind, narrow-minded, rude, selfish, lazy, timid, ambitious, serious, intelligent, honest, well-educated. This list was inspired partly by lists in
Bannister’s studies (Bannister, 1960, 1962; Bannister & Salmon, 1966).
The non-verbal
set contained 16 pictures (see Figure 1 for examples). Their construction had
to strengthen the difference from the verbal attributes. The aim was to avoid non-verbal
attributes with stereotypically trivial meanings. We expected that such
attributes would simply substitute words (e.g., a picture of a shining sun
would substitute attributes like good
or kind, etc.). Therefore the nature
of non-verbal attributes had to be different. The pictures had to fulfil two
conditions: (1) they had to be interesting for the respondents, evoke a wide
variety of meanings, associations, feelings or interpretations, (2) they had to
have a projective nature; they had not bear any clear or stereotypical
meanings.
The non-verbal
attributes were created by a professional artist and designer, and were
evaluated by three other people with respect to fulfilling the two conditions.
Examples of several attributes are in Figure 1.
Figure 1: Samples of attributes
Such non-verbal
attributes are poorly structured and vague. It may be argued that respondents
will deal with them quite unsystematically or randomly. An alternative to this
hypothesis claims that respondents will deal with such projective material
according to their individual interpretations and that there will be some order
in their responses, even though not necessarily consciously reflected. This
alternative is in accordance with general assumptions of projective techniques
like the Rorschach test that seeks an order behind spontaneous reactions to
poorly structured stimuli, which can be an effective method of psychological
assessment.
The four
mono-polar grid tests were created by the combination of two element sets and
two attribute sets and were administered to each respondent in the following
order:
1. Elements
for the initial test, non-verbal attributes.
2.
Elements for the initial test, verbal attributes.
3.
Elements for the re-test, non-verbal attributes.
4.
Elements for the re-test, verbal attributes.
In contrast
to Bannister’s approach, where elements (persons) are assigned to attributes (Bannister,
1960, 1962), we used a reverse instruction and asked the respondents to assign
attributes to elements. This is due to the fact that, in the non-verbal form,
it appeared for respondents to be quite unnatural and difficult to assign
elements to non-verbal attributes.
Each of the
four grid tests was administered as follows: The grid test was introduced as a
method for mapping respondent’s own way of understanding other people. A
respondent was given the whole set of attributes (spread on a table) and the
first element (a photo). Then he/she was asked to characterize the person in
the photo using half the attributes (i.e. 8 out of 16). The respondents were
usually able to do this task without any other explanations. If they sometimes
asked what was the meaning of some attribute (usually of a non-verbal
attribute), they were told that it is up to them. If they sometimes found it
hard to assign all the 8 attributes, they were told that they may assign also those
attributes that the element might have occasionally. When the respondent
finished the task, he/she was given another element and so on until the last
eighth element was characterized. The time for completion of each grid was
recorded.
Additionally,
10 random grids of the same size were generated in order to compare them with
real data.
Data analysis
Intensity and
consistency
The
collected data has the same structure as the example in Table 1. Bannister
(1960, 1962) calculated the intensity index as the sum of split matching scores
determined for all pairs of attributes. In terms of this article these scores
express how two attributes or two row patterns are identical or inverse (see
above). The split matching score utilizes the fact that sums of row attribute
patterns are constant. However, this is not the case in this study. Since the
instruction is reverse, the column element patterns and not the row patterns
are constant. Then a modified expression of relationships among attributes
needs to be employed.
The
modified algorithm considers the level of matching and non-matching among
attributes, as well. This is determined from a transformation of the original
data matrix. The matrix transformed for this purpose (Table 3) contains pairs
of elements in columns and original attributes in rows. Binary data in cells
indicate similarities (cross) and contrasts (blank) of elements within the
pairs. Analogically, as in Bannister (1960, 1962), it is assumed that two
elements are similar if and only if they simultaneously possess or
simultaneously do not possess a given attribute. In other cases they are in
contrast. For example ‘self’ and ‘boss’ are similar as they are both selfish. They are also similar with
respect to kind because none of them
possesses this attribute. With respect to generous
they stay in contrast as ‘boss’ is generous
but ‘self’ is not.
Table 3:
The transformed matrix
|
Self-
Best friend |
Self-
Boss |
Self- Partner |
Best friend- Boss |
Best friend- Partner |
Boss- Partner |
kind |
|
x
|
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|
x
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|
good |
|
x
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|
x
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|
selfish |
|
x
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|
x
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|
generous |
x
|
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|
x
|
Now it is
easy to analyze how the attributes match with each other in the specification
of similarities and differences. Table 3 shows that the first three attributes
match perfectly with each other, whereas generous
matches with them only in two out of six cases (by ‘self’-‘partner’ and by
‘best friend’-‘boss’). This corresponds to the above-mentioned finding that the
three attributes have either similar or inverse row patterns (see Table 1). In
other words, intensity of their relationships is maximal.
The level
of overall intensity is quantified in the following way: For each pair of
attributes a matching score is obtained as a sum of matching cases (e.g. 6 for kind-good,
2 for kind-generous, etc.). The average of these matching scores is intensity.
In contrast to the original approach (Bannister, 1960, 1962) the matching
scores are not totalled but averaged. This is because some respondents did not
use all 16 attributes [2]. These were excluded from the analysis, so the number
of matching scores for pairs of attributes was lower in such reduced grids.
Consequently, their sums would not be comparable with sums derived from grids
with all of attributes. Therefore the average of the matching scores is more
appropriate here.
Intensity
was calculated separately for each of the four grids. Because Bannister’s
studies (1960, 1962) do not deal with such particular indexes of intensity but
only with an overall index that includes intensity both of the initial test and
of the re-test, counterparts of this intensity were determined here as well –
mean verbal intensity of two verbal grids and mean non-verbal intensity of two non-verbal
grids.
Consistency
was determined similarly as in the original studies (Bannister, 1960, 1962) as
the Pearson’s correlation between the matching scores among attributes in the
initial test with their equivalents in the re-test. In contrast to the original
studies the correlations were not squared and multiplied by 100 in order to
obtain ‘variance in common’ scores. Some correlations were negative, so their
squaring would change consistency into the reverse (i.e., attribute correlating
negatively would appear to be consistent after the squaring). Thus, the
correlation coefficients were considered as measurements of consistency.
RESULTS
The mean
time needed for the completion of the initial non-verbal and verbal test was
8.6 and 11.5 minutes, respectively. The mean time
for the non-verbal and verbal re-tests was 7.6
and 8.8 minutes, respectively [3]. Descriptive statistics of considered variables
are shown in Table 4.
Table 4:
Descriptive statistics
Measure |
Mean (SD) |
Median |
Range |
Intensity (verbal initial test) |
15.10 (0.84) |
15.03 |
13.50 ... 17.63 |
Intensity (verbal re-test) |
15.03 (0.82) |
15.03 |
13.93 ... 18.61 |
Mean verbal intensity |
15.07 (0.62) |
14.93 |
13.73 ... 16.94 |
Intensity (non-verbal initial test) |
14.86 (0.79) |
14.60 |
13.77 ... 16.83 |
Intensity (non-verbal re-test) |
14.71 (0.53) |
14.57 |
14.03 ... 16.23 |
Mean non-verbal intensity |
14.78 (0.53) |
14.71 |
14.10 ... 16.13 |
Verbal consistency |
0.1 (0.14) |
0.10 |
-0.15 ... 0.43 |
Non-verbal consistency |
0.05 (0.12) |
0.05 |
-0.16 ... 0.33 |
Intensity (random sample) |
14.1 (0.24) |
14.1 |
13.70 ... 14.40 |
According
to the Sign test, verbal consistency is significantly higher than non-verbal
consistency (Z=-2.30, p<0.05); mean verbal intensity is significantly higher
than mean non-verbal intensity (Z=-2.63, p<0.01). Intensity derived from the
random grids is significantly lower than all the other intensity measures
(Mann-Whitney U Test; p<0.001 for all three verbal intensity measures, for
mean non-verbal intensity and for re-test non-verbal intensity; p<0.01 for non-verbal
intensity in the initial test).
Table 5
presents Spearman’s rank ordered correlations of the measures.
Table 5:
Correlation matrix (Spearman’s rho) of the considered indexes
|
2
|
3 |
4 |
5 |
6 |
7 |
8 |
1. Intensity (verbal initial test) |
0.11 |
0.76** |
0.41* |
0.19 |
0.39* |
0.25 |
0.09 |
2. Intensity (verbal re-test) |
|
0.70** |
0.13 |
0.15 |
0.18 |
0.41* |
0.38* |
3. Intensity (mean verbal) |
|
|
0.36* |
0.22 |
0.38* |
0.38* |
0.29 |
4. Intensity (non-verbal initial test) |
|
|
|
0.33* |
0.89** |
-0.08 |
-0.05 |
5. Intensity (non-verbal re-test) |
|
|
|
|
0.70** |
0.02 |
0.14 |
6. Intensity (mean non-verbal |
|
|
|
|
|
-0.05 |
-0.11 |
7. Verbal consistency |
|
|
|
|
|
|
0.42* |
8. Non-verbal consistency |
|
|
|
|
|
|
|
* p < .05.
** p < .01.
DISCUSSION
Verbal-non-verbal relationships
The
differences between verbal and non-verbal consistency and between verbal and non-verbal
intensity are in accordance with the hypothesis assuming the loosening effect of
poorly structured stimuli.
Correlations
shown in Table 4 suggest that the verbal measures converge with the non-verbal
ones to some extent. The significant correlations are not very high (except the
relationships with mean verbal and non-verbal intensity that are statistical
artifact). According to standard criteria for evaluation of test validity the
correlations should be higher.
The results
enable an alternative interpretation when considering the very different nature
of verbal and non-verbal attributes. The former ones (adjectives) have relatively
clear meanings, the latter ones enable a much broader variety of
interpretations. This had an obvious impact on the respondents’ approach to
grid completion. Respondents dealt with the non-verbal attributes more quickly.
From administrators’ point of view, they responded intuitively or even
randomly, usually without any attempt to consciously organize their responses.
They were also likely to consider the task as a play. On the other hand the
respondents dealt with the verbal attributes apparently more consciously.
Regarding these observations, significant correlations between different types
of grids could be interpreted as nontrivial and as a support of the generality hypothesis.
Particularly, it could be hypothesized that respondents differ from each other
in a general tendency to construe people more or less intensively or
consistently. This tendency influences their completion of different but convergent
forms of grids. It must be pointed out that one finding, a weak correlation
between re-test verbal and non-verbal intensity, is not in accordance with this
interpretation.
The moderate
significant correlation between non-verbal intensity in the initial test and in
the re-test supports the generality hypothesis as well.
In this case the generality would mean that respondents who were likely to
construe elements in the initial test more or less intensively tended to do the
same when construing different elements in the re-test. However, this kind of
generality is not replicated in verbal grids.
Intensity – consistency relationships
Bannister
(1960, 1962) reports mean values of consistency for a nonclinical sample of 50
and 36 (squared values multiplied by 100) that correspond to mean correlations
of 0.7 and 0.6. In the present study levels of consistency were much lower,
often close to zero. The question is how such a big difference could occur.
It could be
argued that the levels of consistency close to zero show randomness of
participants’ responses. However, zero consistency does not necessarily indicate
that the data are random. It merely indicates no relationship between construct
structures in the initial test and in the re-test. Next, if the derived
measures were random variables, they should not correlate, which is not the
case. Finally, there are differences between random grid intensity and
intensity of respondent’s grids. A further analysis should clarify the issue of
low consistency.
An important
finding is that a correlation between verbal intensity and consistency
replicates findings of previous studies. However, these report stronger
relationships (e.g. 0.71 in Bannister, 1962). Figure 2 helps to better explore
the relationships between mean verbal intensity and consistency. The graph
suggests that the relationship can be nonlinear – the higher the consistency,
the higher the intensity, but the lower the negative consistency, the higher
the intensity.
Table 6
enables comparisons of two regression models derived from data (linear and
quadratic) with mean verbal intensity as a dependent variable. It shows that
the quadratic model explains a greater proportion of variance of mean verbal
intensity than the linear model. The regression line and curve are displayed in
Figure 2.
Table 6: Parameters
of linear and quadratic models
Type of model |
Equation |
R2
(Coefficient of determination) |
Linear |
intensity =
14.88+1.82*consistency |
0.18** |
Quadratic |
intensity =
14.86–1.56*consistency+12.28*consistency2 |
0.43*** |
**p <.01
***p<.001
Figure 2: Relationship between verbal intensity and verbal consistency
One may
wonder whether negative values of consistency were considered in the previous
studies. Bannister (1960, 1962) does not report the range of consistency, just
mean and standard deviation of its squared values multiplied by 100. In
particular samples mean levels of consistency were quite low with a relatively
high standard deviation (e.g. mean of 10.25 with standard deviation of 20.4 in
a sample of schizophrenic patients, which corresponds to a correlation of
0.32). This suggests that there could be at least several negative cases of
consistency in such a sample. Assuming that the relationship with verbal
intensity was nonlinear as well, the squared version of this measure had to
correlate highly with intensity. This effect could partially explain the high
reported correlations. Similarly, in the present study, squared verbal
consistency correlates with verbal intensity 0.62 (p<0.01), which is very
close to Bannister’s findings. This can also partially explain the higher mean
verbal consistency in the previous studies; they could involve squared negative
correlations. However, this explanation has no direct support as the
non-squared consistency levels are not reported in the original papers.
The estimated quadratic function has its
minimum (lowest mean verbal intensity of 14.80) at a consistency level of 0.06,
which denotes in fact no relationship between the initial and re-test
structures. The combination of the lowest intensity and zero consistency
probably corresponds with the most disorganized data. However, this minimal intensity
of 14.80 (estimated by the quadratic model) is still higher than the highest
intensity (14.40) observed in random grids. This suggests that consistency
about zero does not have to mark the total randomness of respondents’ data. Of
course, some of them could be random but the majority of them exceeds this
maximum value of random intensity (see Figure 2).
Intensity increases with a distance of
consistency from zero. This can correspond with a higher organization of
responses. The question is, however, what it means from the psychological point
of view. Particularly, what can negative consistency mean? The nonlinear
relationship is predicted neither by Bannister’s nor by any other PCP theory.
It could be argued that respondents yielding negative consistency
systematically turned a construct structure in the initial test into some
different structure. Attributes with identical or inverse row patterns in the
initial test have these relationships with completely different attributes in
the re-test. Such effect requires a systematic way of dealing with attributes
that could also have an impact on the increase of intensity. However, the
lowest negative consistency value is not lower than -0.2, so the question is
whether such negative values of consistency close to zero can denote any
systematic way of dealing with attributes at all.
CONCLUSION
This study
attempted to analyze relationships between verbal and non-verbal construing. It
recalls a nearly forgotten technique of mono-polar grids and, besides
intensity, a measure of consistency in a special variant that reflects a
transferability of a construct structure from one domain onto another.
The
comparison of the verbal indexes with their non-verbal equivalents provides
some evidence of their validity. The results are in accordance with the claim
that a work with poorly structured attributes in the non-verbal form will yield
a decrease of tightness. On the other hand, despite the different nature of
verbal and non-verbal stimuli, the considered verbal measures correlated significantly
with their non-verbal variants. This is in line with the generality hypothesis
assuming that structural features of construct systems are general trait-like
tendencies. Nevertheless, all these findings are somewhat ambiguous as they are
not compatible with all statistical results. The limitation of the sample is
obvious as well.
The results
of the verbal grids are partially compatible with findings of previous studies.
An interesting finding is that the relationship between verbal intensity and
consistency can be better viewed as nonlinear than linear, which is a puzzle
for a PCP interpretation.
The results
suggest that data of non-verbal grids are not random and that their
organization can be expressed in terms of grid summary measures, such as
intensity or consistency. The question is, how the notion of the order behind
reactions to vague non-verbal stimuli, which makes these non-verbal grids
similar to projective techniques, could be utilized. The limited practical
utility of the current results is obvious. The most striking problems are a low
range of obtained values of considered measures and the unclear psychological
meaning of negative values of consistency. A further research that would
manipulate types of elements, attributes, instructions and samples of respondents
is needed.
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ENDNOTES |
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[1] The
sample of respondents was included into a broader clinical study. For this
reason the set of elements within the initial tests contained also elements
‘self’ and ‘ideal self’ that were administered after the 8 photos. Data from
these two additional elements are not considered in this paper because the two
initial grids would be larger (10 elements) than the two re-test grids (8
elements) and therefore would be, in some respects, hardly comparable with
them.
[2] From
all 148 administered grids (4 grids by 37 respondents) in 22 grids (9 verbal
and 13 non-verbal) one attribute was not used at all; furthermore in one verbal
grid and two non-verbal grids using of two attributes was avoided. The neglected
verbal attributes were typically adjectives with negative connotations (rude, lazy). There were no non-verbal attributes that were noticeably
neglected more frequently than others.
[3] The
initial tests originally had a larger list of attributes (i.e. including ‘self’
and ‘ideal self’). The mentioned interval is an average time needed for the
evaluation of the considered 8 elements without the additional two elements.
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AUTHORS' NOTE
The study
is a part of the grant project of GA ČR no. 406/09/P604 entitled
“Psychodiagnostics from a Perspective of the Personal Construct Theory.”
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ABOUT
THE
AUTHORS
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Miroslav
Filip works at the Institute of Psychology of Academy of Sciences, Brno, Czech
Republic. He does research focusing on clinical and methodological issues in
personal construct theory. He is also interested in analytical psychology and
psychotherapy.
Marie Kovarova
is a doctoral graduate student at the Masaryk University, Brno, Czech Republic.
She is interested in personal construct psychology (e.g. cognitive complexity
research) and clinical psychology.
Tomas
Urbanek works at the Institute of Psychology of Academy of Sciences, Brno,
Czech Republic, and teaches at the Department of Psychology, Faculty of Arts,
Masaryk Univeristy in Brno. He is interested in methodology, psychosemantics,
psychometrics, and combining the qualitative and quantitative methods.
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REFERENCE
Filip, M., Kovarova, M., Urbanek, T. (2012). Relationships
between Bannister’s intensity and consistency in verbal and non-verbal grids.
Personal
Construct Theory & Practice, 9, 28-41, 2012
(Retrieved from http://www.pcp-net.org/journal/pctp12/filip12.html)
Correspondence address: filip@psu.cas.cz |
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Received: 1 February
2012 – Accepted: 14 December 2012 –
Published: 28 December 2012
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