Using the time-varying autoregressive model to study dynamic changes in situation perceptions and emotional reactions

Casini, E., Richetin, J., Preti, E. & Bringmann, L. F., 30-Nov-2019, In : Journal of Personality. 16 p.

Research output: Contribution to journalArticleAcademicpeer-review

Objective Assuming personality to be a system of intra-individual processes emerging over time in interaction with the environment, we propose an idiographic approach to investigate potential changes of intra-individual dynamics in the perception of situations and emotions of individuals varying in personality traits. We compared the semiparametric time-varying autoregressive model (TV-AR) that takes into account the non-stationarity of psychological processes at the individual level, with the standard AR model. Method We conducted analyses of individual time series to assess intra-individual changes in mean levels and inertia on data from two adolescents who completed measures of personality and indicated their situation perceptions and emotions five times a day for 19 days. Results For the less honest, emotional, extraverted, and more agreeable adolescent, the TV-AR model detected reliable changes in the intra-individual dynamics of situation perceptions and emotions whereas, for the other individual, the standard AR model was more preferred, given the lack of changes in the intra-individual dynamics. Conclusions Psychological processes dynamics in situation perception and emotions may vary from person to person depending on their personality. This work constitutes a first step in demonstrating that an idiographic approach has advantages in identifying changes in individuals' perceptions and reactions to situations.

Original languageEnglish
Number of pages16
JournalJournal of Personality
Publication statusE-pub ahead of print - 30-Nov-2019


  • dynamic modeling, idiographic, non-stationarity, time-varying autoregressive model, MAJOR DIMENSIONS, 8 DIAMONDS, PERSONALITY, INERTIA, DISPOSITIONS, REACTIVITY, REJECTION, LEVEL

ID: 107888964