Methodology of the Joint Effort Toddler Temperament Consortium (JETTC)

Abstract

Researchers in 14 countries recruited families of toddlers between the ages of roughly 18 and 36 months. These samples ranged from 48 to 119 participants, for a total N of 853. Primary caregivers completed the Early Childhood Behavior Questionnaire (ECBQ) regarding temperament; the Child Behavior Checklist (CBCL) regarding behavior problems; adaptations of Socialization Goals and Parental Ethnotheories questionnaires regarding parental beliefs; and new questionnaires concerning daily activities and parent responses to temperament displays. Cultural orientation scores were obtained from archival data.