MODELING CHANGE - WHY AND HOW

The assessment of change is a major methodological concern in developm ental and educational psychology. In this article, we underline the ad vantages of Hierarchical Linear Models for the adequate statistical mo delling of change. The benefits of this method are exemplified with re spect to memory research, especially in its developmental orientation. Besides the discussion of theoretical issues, the applications of Hie rarchical Linear Modelling and traditional ANOVA analyses are compared using a data set from an expert-novice study on short-term knowledge acquisition in the domain of chess.