3.1. Results from the 13-item version of the Cognitive Style Questionnaire (CSQ-13)
Possible scores on the CSQ-13 ranged from 117–585. Descriptive statistics for the CSQ-13 are presented in . shows the correlation matrix for relations between scores on the CSQ-13 for the five dimensions of cognitive style (internality, globality, stability, self-worth, and negative consequences). As shown in , scores for all dimensions were positively correlated with one another. The internal reliability of the scores across the five dimensions was good,
α = .81. A principal components analysis was performed on the scores for the five dimensions.
Kaiser’s (1960) rule, scree-plot analysis, and parallel analysis using a Monte Carlo analysis with 1000 repetitions, all suggested the extraction of a single factor. This factor (with an eigenvalue of 3.08) accounted for 61.65% of the observed variance. All five dimensions loaded onto this factor, with loadings ranging from .35 to .88.
| Table 3Correlations between the Five dimensions of cognitive style on the CSQ-13. |
Turning to reliability across the scores for the 13 scenarios, Cronbach’s alpha for the CSQ-13 was .91. As a value of alpha greater than .90 suggests that a questionnaire may contain unnecessary duplication of content (
Streiner, 2003), the content of the scenarios on the CSQ-13 was re-examined for item redundancy, leading to the removal of two scenarios (‘low average mark for the year’ and ‘low mark in an assignment’) highly similar to another scenario (‘you receive a low mark for an exam’).
3.2. Results from the 11-item version of the Cognitive Style Questionnaire (CSQ-11)
The final 11 scenarios that remained from the CSQ-13 formed the basis of the second version of the CSQ, the CSQ-11, which was administered via the Internet to a separate sample of participants. The response items for the CSQ-11 were identical to those for the corresponding scenarios in the CSQ-13. Possible scores on the CSQ-11 ranged from 99 to 495.
Descriptive statistics for the CSQ-11 are shown in . shows the correlation matrix for relations among scores on the CSQ-11 for the five dimensions of cognitive style (internality, globality, stability, self-worth, and negative consequences). As shown in , scores for all dimensions were positively correlated with one another. The internal reliability of the scores across the five dimensions was good,
α = .86. A principle components analysis was performed on the scores for the five dimensions.
Kaiser’s (1960) rule, scree-plot analysis, and parallel analysis using a Monte Carlo analysis with 1000 repetitions, all suggested the extraction of a single factor. This factor (with an eigenvalue of 3.31) accounted for 66.15% of the observed variance. All five dimensions loaded onto this factor, with loadings ranging from .52 to .91.
| Table 4Correlations between the five dimensions of cognitive style on the CSQ-11. |
With respect to reliability for scores across the 11 scenarios, Cronbach’s alpha for the CSQ-11 was found to be .89, suggesting that there was still item redundancy (
Streiner, 2003). Analyses indicated that the deletion of three scenarios (‘your partner does not want a relationship with you any more’, ‘you do not look as good as you would like in terms of your physical appearance’, and ‘you receive a low mark for an exam’) would reduce the Cronbach’s alpha of the CSQ-11, leaving eight scenarios to form the final version of the CSQ, the CSQ-SF.
3.3. Results from the Short-Form version of the Cognitive Style Questionnaire (CSQ-SF)
The final eight CSQ-SF scenarios are presented in Supplementary Material: Appendix 2. As with the CSQ-13 and CSQ-11, each scenario was assessed using nine response items, scored from 1 to 5. Total scores on the CSQ-SF could hence range from 72 to 360, with higher scores reflecting a more negative cognitive style.
Descriptive statistics for the CSQ-SF are reported in . shows the correlation matrix for relations among scores on the CSQ-SF for the five dimensions of cognitive style (internality, globality, stability, self-worth, and negative consequences). As shown in , scores for all dimensions were positively correlated with one another. The internal reliability of the scores across the five dimensions was good,
α = .85. A principal components analysis was performed on the scores for the five dimensions.
Kaiser’s (1960) rule, scree-plot analysis, and parallel analysis using a Monte Carlo analysis with 1000 repetitions, all suggested the extraction of a single factor. This factor (with an eigenvalue of 3.25) accounted for 65.08% of the observed variance. All five dimensions loaded onto this factor, with loadings ranging from .54 to .89.
| Table 5Correlations between the five dimensions of cognitive style on the CSQ-SF. |
3.4. Gender differences
On the CSQ-13, women (M = 332.36, SD = 42.28) scored more highly than did men (M = 319.45, SD = 43.50), t(242) = 2.26, p < .025, d = 0.30, indicating that women had a more negative cognitive style. There was no difference in CSQ-11 scores between men (M = 279.53, SD = 32.46) and women (M = 283.75, SD = 44.02), t(388) = 0.98, n.s., d = 0.11. There was no difference in CSQ-SF scores between men (M = 201.05, SD = 28.96) and women (M = 197.29, SD = 28.65), t(276) = 1.09, n.s., d = 0.13.
To explore potential reasons for the absence of a gender effect on the CSQ-11 and CSQ-SF, we investigated responses on the original CSQ-13 individual items as a function of gender. Gender differences were observed on only two of the items, with women demonstrating more negative cognitive style in relation to (a) low mark in an assignment, t(246) = 3.43, p < .001, d = 0.46, and (b) not looking good in terms of physical appearance, t(246) = 2.54. p < .025, d = 0.34. The first of these items was omitted in the CSQ-11, and the second was omitted in the CSQ-SF.
3.5. Reliability of the CSQ-SF
Reliability across the eight scenarios of the CSQ-SF was good,
α = 81, being comfortably between the recommended boundaries of 0.7 and 0.9. This showed the CSQ-SF scenarios to have internal reliability. The split-half coefficient was also satisfactory at .78. A principal components analysis was performed on the scores for the eight scenarios.
Kaiser’s (1960) rule, scree-plot analysis, and parallel analysis using a Monte Carlo analysis with 1000 repetitions, all suggested the extraction of a single factor. This factor (with an eigenvalue of 3.47) accounted for 43.31% of the observed variance. All eight scenarios loaded onto this factor (with loadings ranging from .46 to .76), suggesting all scenarios similarly assessed cognitive style.
Test–retest reliability over a period of 4 weeks was performed on a sub-sample of 60 of the 276 participants who originally completed the CSQ-SF. The test–retest correlation for total CSQ-SF scores was
r(58) = .91,
p < .001. A two-way mixed model intra class correlation with absolute agreement type (
Shrout & Fleiss, 1979) found a correlation of .90,
p < .001. Thus the CSQ-SF demonstrated excellent test–retest reliability.
3.6. Validity of the CSQ-SF
Face validity was ensured through the use of a subset of the negative scenarios used in the original CSQ, and response scales addressing the same key dimensions (internal–external, global–specific, stable–unstable, self-worth, negative consequences). Previous studies have shown the negative scenarios of the CSQ to be positively correlated with both the depression and anxiety subscales of the HADS (
O’Connor, Connery, & Cheyne, 2000). As shown in , positive correlations were found between CSQ-SF scores and both the depression and anxiety subscales of the HADS. These relations were maintained when age and gender were controlled for (see ). The fact that more negative cognitive style as assessed using the CSQ-SF was associated with higher scores for depression and anxiety demonstrates the construct validity of the CSQ-SF.
| Table 6Correlations between CSQ-SF, depression, and anxiety. |
3.7. Mode of administration
To investigate possible effects of mode of administration (electronic versus paper-and-pen format), we compared responses to the eight items common to all three versions of the CSQ (those items that formed the CSQ-SF) across the three samples involved. The mean scores for the three versions of the CSQ are shown in .
| Table 7Mean scores on the final eight CSQ items for the three separate samples. |
Total CSQ scores between samples were compared using one-way ANCOVA with administration mode (electronic, paper-and-pen) as the independent variable and gender and age added as covariates. Comparing scores for the CSQ-13 (paper and pen) with those on the CSQ-11 (electronic), there was no effect of administration mode, F(1, 632) = 2.27, n.s., η2 = .004. Comparing the 8-item scores on the CSQ-11 (electronic) with those on the CSQ-SF (paper-and-pen), there was no main effect of administration mode, F(1, 664) = 2.23, n.s., η2 = .003.