In this longitudinal study, we investigated the factor structure and stability of early-life temperament in a German sample, using three measures developed within Rothbart's psychobiological approach. Temperament was measured using the Infant Behavior Questionnaire Revised (IBQ-R) at the ages of 6 and 12 months, the Early Childhood Behavior…

Background/purpose: This study aimed to investigate the extent to which the family environment predicts neuroticism and extraversion among students at Jadara University. A total of 425 university students were recruited. Materials/methods: Two scales, the Family Environment Scale and the Neuroticism and Extraversion Scale, derived from the Big…

The aim of the study was to compare narcissism levels of bodybuilding athletes in elite level before and after anabolic steroid cure. Method: The sample group of the study was composed of a total of 42 bodybuilding athletes who use steroids and voluntarily participated in the study. A control group of 22 people was also established and they did…

The aim of this work is to investigate whether literature has effect on the personality development of individuals or not. This works aims to provide answers to the following research questions: "Does literature have effect on individuals' general harmony level, their social cohesion levels, personal harmony level, self-actualization level,…