Parental Care and Tenderness questionnaire (PCAT)

RADAR (Research on Adolescent Development And Relationships) is a longitudinal study that started in 2005. RADAR focuses on the interactions and relationships of adolescents with parents and peers, their emotional state, personality, identity, and internalizing and externalizing problem behavior. RADAR investigates the development of about 800 participants from early adolescence to adulthood. Additionally, their parent(s), intimate partner, brother or sister, and (best) friend also participate in the study.青少年发展与关系研究（RADAR，Research on Adolescent Development And Relationships）是一项始于2005年的纵向研究。该研究聚焦于青少年与父母及同伴的互动与关系、情绪状态、人格特质、身份认同，以及内化问题行为与外化问题行为。本研究对约800名参与者从青春早期到成年期的发展轨迹进行追踪。此外，参与者的父母、亲密伴侣、兄弟姐妹以及（最好的）朋友也会参与此项研究。