Analysis of association between temperament and psychological symptoms using the Affective and Emotional Composite Temperament (AFECT) model: An internet-based survey.

Background: Temperamental characteristics have been suggested as potential vulnerability markers or could help differential diagnosis among psychiatric disorders. The current study aimed to explore whether there are specific temperament profiles related to different psychological symptoms, according to the Affective and Emotional Composite Temperament (AFECT) model.

Methods: We used a cross-sectional web-based survey collected from the Brazilian Internet Study on Temperament and Psychopathology (BRAINSTEP).

Low affective temperament consistency during development: Results from a large retrospective study.

Background: Temperament is still regarded as a stable part of personality, an "endophenotype" developed early in life. However, how frequently temperament traits can change throughout life is not clear. The aim of this study was to investigate affective temperament changes from late childhood to adolescence and from late adolescence to adulthood.