Volume 52, Issue 3 pp. 218-228
Cognitive and Neuroscience

Development of the Cognitive Dysfunction Questionnaire (CDQ) in a population based sample

PETER VESTERGREN

PETER VESTERGREN

Department of Applied Educational Science, Umeå University, Sweden

Search for more papers by this author
MICHAEL RÖNNLUND

MICHAEL RÖNNLUND

Department of Psychology, Umeå University, Sweden

Search for more papers by this author
LARS NYBERG

LARS NYBERG

Department of Radiation Sciences and Integrative Medical Biology, Umeå University, Sweden

Search for more papers by this author
LARS-GÖRAN NILSSON

LARS-GÖRAN NILSSON

Department of Psychology, Stockholm University and Stockholm Brain Institute, Sweden

Search for more papers by this author
First published: 25 January 2011
Citations: 6
Peter Vestergren, Department of Applied Educational Science, Umeå University, S-901 87, Umeå, Sweden. E-mail: [email protected]

Abstract

Vestergren, P., Rönnlund, M., Nyberg, L. & Nilsson, L.-G. (2011). Development of the Cognitive Dysfunction Questionnaire (CDQ) in a population based sample. Scandinavian Journal of Psychology52, 218–228.

The study reports on the development of a questionnaire for assessment of adult cognitive dysfunction (CDQ). Participants in a population-based sample (65 ± 15 years, N =370) responded to a 90-item pilot version covering multiple aspects of memory/cognition. Based on exploratory principal components analyses and correlations with criterion measures of cognitive functioning (MMSE, Block Design, semantic/episodic memory), 20 items loading on 6 components were selected for the final version of the questionnaire. Cronbach’s α for the total score was 0.90. There was evidence of construct validity as judged by correlations between CDQ scores, objective cognitive measures, and a subjective memory measure (PRMQ). Discriminant validity was demonstrated by a low and non-significant correlation with depressive symptoms. Further evidence of construct validity was provided by correlations with age and educational attainment. In conclusion, the CDQ is promising as a self-rating screening tool for cognitive dysfunction, and will be the subject of further development and validation.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.