Quantifying Idiodynamics: A Process Approach to Personality Psychology

Rosenzweig's (1950) concept of idiodynamics is presented, and the importance of time in applied idiodynamics is stressed. Time-series analyses are proposed as one method for realizing the potential of idiodynamics for understanding and modeling individual lives. Building on this, and incorporating Cattell's (1966) notion of the data box, a process approach to personality research is proposed. This approach begins with idiodynamic analyses at the level of individual lives in an effort to identify patterns or themes, then proceeds to examine individual differences in the patterns or themes so identified. Examples of applying this process approach to personality questions are provided. These include identification of cycles in daily moods, assessing the link between each individual's moods and the events in his/her daily life, and the relation between repressive coping style and the experience of and memory for affect-charged life events. Conclusions emphasize how this approach can retain the appeal of the dynamic while maintaining the precision and rule-governed discourse afforded by quantification.