Construct validity and factor stability of the anorectic cognitions questionnaire

Area of Science:

• Clinical Psychology
• Psychopathology Research
• Eating Disorder Assessment

Background:

• Cognitive distortions are implicated in anorexia nervosa and bulimia nervosa.
• Existing instruments for assessing these cognitions lack psychometric adequacy.
• The Mizes Anorectic Cognitions (MAC) questionnaire was developed to address this gap.

Purpose of the Study:

• To examine the construct validity of the MAC questionnaire.
• To assess the temporal reliability and factor stability of the MAC.
• To validate the MAC in a sample of college-aged females.

Main Methods:

• The study involved 100 college females.
• Psychometric properties including construct validity and test-retest reliability were evaluated.
• Factor analysis was used to assess factor stability.

Main Results:

• The MAC questionnaire demonstrated excellent construct validity.
• High test-retest reliability was observed, indicating temporal stability.
• The three-factor structure (Self-Control, Weight and Approval, Rigid Weight Regulation) was cross-validated.

Conclusions:

• The Mizes Anorectic Cognitions (MAC) questionnaire is a psychometrically sound instrument.
• The MAC is reliable and valid for assessing specific cognitive distortions in eating disorders.
• The findings support the use of the MAC in clinical and research settings for college-aged females.