Psychometric Assessment and Individual Differences

The research group on Psychometric Assessment and Individual Differences is led by Thierry Lecerf (MER).

Research fields

Our main theme of teaching and research concerns the construction, the use and the interpretation of psychometric tests, and focuses more particularly on multivariate study of cognition. Our research reflects both a fundamental and more practical approach.

A first theme of research addresses the question of the structure of cognitive abilities. More precisely, the objectives are to determine the more adequate factorial structure of the WISC-IV and what are the constructs measured by each subtest. The Cattell-Horn-Carroll (CHC) theory of cognitive abilities is used as a general framework.

A second theme concerns the question of the long-term stability of intellectual performance. More precisely, the question is whether the performance scores estimated from the WISC-IV are stable over an interval of 2 to 3 years.

A third theme concerns the study of inter-and intra-individual variability in executive functions, processing speed, working memory and fluid intelligence. The relationships between these constructs are examined both in terms of level of performance and intra-individual variability with a large multivariate design. The objective is to determine whether intra-individual variability represents a stable individual characteristic.