The Parent and Child Memory Questionnaires: Convergent validity, factor structure, internal consistency, and cross-informant reliability in typically developing children.

The Parent Memory Questionnaire (PMQ) and Child Memory Questionnaire (Child MQ) assess children's memory functioning in daily activities. Their psychometric properties are largely unknown. Hence, this study aimed to establish the psychometric properties of the PMQ and Child MQ. A sample included 239 neurotypical children (113 females; M age = 12.3 years) from Australia and Canada and their parents ( n  = 306; 149 females). Children also completed standardized and experimental verbal memory tests that assessed working memory, immediate recall, and recall after short (2 min, 30 min) and long (7 day) delays. Convergent validity with memory tests was low for both questionnaires, with significant, albeit small, correlations found for the WISC IV Digit Span Forward only. Exploratory factor analysis (Principal Axis Factoring with Promax rotation) of the PMQ and Child MQ yielded two (Forgetting and Remembering) and four factors (Forgetting, Remembering, Retrieval, and Episodic Memory) accounting for 49.3% and 40.6% of the variance, respectively, and reduced the number of items from 28 to 17. Both PMQ factors showed good internal consistency. Inter-rater reliability was adequate but children rated their memory as significantly poorer than their parents. The present study revealed different factorial structures for the PMQ and Child MQ. Our findings highlighted that memory questionnaires assess several aspects of memory and may complement objective memory tests in children's memory evaluation.