Personality and Depression: A Validation Study of the Depressive Experience Questionnaire

Dependency and self-criticism in treatments for depression

Dependency and self-criticism are vulnerability factors for depression. How these personality factors change with treatment for depression and how they relate to symptom change across different types of treatment require further research. In addition, cultural differences that interact with the dependency/self-criticism-depression relation remain underinvestigated. We randomly assigned 149 adults with major depression to receive active medication (MED; n = 50), supportive-expressive therapy (SET; n = 49), or placebo pill (PBO; n = 50). Participants completed the Depressive Experiences Questionnaire (DEQ; Blatt, D'Afflitti, & Quinlan, 1976) before and after treatment and completed the Hamilton Rating Scale for Depression (Hamilton, 1967) throughout the course of treatment. Self-criticism as measured on the DEQ decreased with treatment similarly across conditions. DEQ Dependency decreased in MED but remained unchanged in SET and PBO. Higher initial dependency, but not higher initial self-criticism, predicted poor treatment response across conditions. Greater reduction in self-criticism was associated with greater reduction in depressive symptoms, but the effect was weaker for racial minorities (vs. White). Increase in connectedness, an adaptive form of dependency, was associated with symptom improvement in SET but not MED. Hence, different pathways of change seem to be implicated in the treatment of depression depending on culture and type of intervention. Implications for future research are discussed. (PsycINFO Database Record

The Portuguese Version of the Depressive Experiences Questionnaire (DEQ): Results from a Validation Program in Clinical and non Clinical Samples

The Depressive Experiences Questionnaire (DEQ, Blatt, D’Afflitti, & Quinlan, 1976, 1979), a self-report measure used in personality research, assesses the constructs of Dependency and Self-Criticism as vulnerability factors in depression (Blatt, 1974, 1990, 2004) and psychopathology more generally (Blatt, 2008; Blatt & Shichman, 1983). This study establishes a Portuguese version of the DEQ with six samples: a bilingual sample to test the measurement equivalence of the Portuguese DEQ, and two college student samples, two community samples and a clinical sample, to test the reliability, factor structure and criterion, convergent and predictive validity of this translation of the DEQ. A measure of depression (Center for Epidemiologic Studies Depression Scale; CES-D; Radloff, 1977) and of general psychopathology (Brief Symptom Inventory; BSI; Derogatis, 1993) evaluated the convergent validity of the DEQ. Findings indicate satisfactory reliability and validity of the Portuguese DEQ, and the value of the DEQ for investigating the relationship between personality and depression and between personality and psychopathology more generally. It is important to note, however, that these conclusions are based on a limited clinical sample. Additional reliability and validity data are needed with a larger clinical sample.

The Depressive Experiences Questionnaire: construct validity and prediction of depressive symptoms in a sample of Chinese undergraduates

BACKGROUND

The Depressive Experiences Questionnaire (DEQ) was developed to measure two dimensions of depression-prone personality, Dependency and Self-criticism. We investigated the construct validity and prediction of DEQ in a Chinese sample, and explored whether Blatt's conceptualizations of depression-prone personality variables are appropriate for the Chinese context.

METHODS

The original version of the DEQ was translated into Chinese (DEQ-C). During the initial assessment, 640 Chinese university students completed the DEQ-C and the Center for Epidemiologic Studies Depression Scale (CES-D). Six months later, the CES-D was re-administered.

RESULTS

A principal components analysis yielded a three-factor model that was consistent with Blatt's theory. However, these three factors emerged in a different order in comparison to the original sample. Factorial validity was also acceptable with low correlations between each DEQ-C factor in males (r=.01 approximately -0.14), and females (r=0.19 approximately 0.28). Convergent validity was supported by significant positive correlations between the CES-D and both Dependency and Self-criticism. Predictive validity was demonstrated by hierarchical multiple regression analyses showing that Self-criticism predicted increased depressive symptoms both in males (beta=0.27, p<0.01) and in females (beta=0.16, p<0.05); Dependency predicted levels of depressive symptoms only in females (beta=0.11, p<0.05).

CONCLUSIONS

The Chinese version of the DEQ demonstrated satisfactory validity, including construct validity and predictive validity, the DEQ-C can be considered as an appropriate tool for assessing personality vulnerability to depression in Chinese college students.