Adolescent prosocial behavior suggests social competence and it is associated with greater parental warmth yet the experience of warmth through child and adolescent development is not well understood as it relates to such prosocial behavior. A nationally representative dataset from the Longitudinal Study of Australian Children cohort was used. The analyses involved multiple waves beginning when children were aged 4–5. The main analyses used a sample of 2723 adolescents aged 16–17 years (Mean, S.D. = 16.45, 0.50; 49.2% female, 50.8% male). Parental warmth trajectories (from ages 4–5 through 16–17 years) were created and used to explore the accumulated effect of a lifecourse of parental warmth on adolescent prosocial behavior as measured when adolescents were aged 16–17 years. There were three trajectories described as, consistent (28.7%), slight decline (51.4%), and declining warmth (19.8%). These were associated with prosocial behavior; adolescents with a slight decline in warmth were 2.2 times less likely than those with consistent warmth to have the highest prosocial behavior. Consistent parental warmth likely provides greatest benefit for increased prosocial behavior in mid-adolescence.

青少年亲社会行为表明了社交能力，并且与父母更大的温暖有关，但儿童和青少年发展过程中的温暖体验尚未得到很好的理解，因为它与这种亲社会行为有关。使用来自澳大利亚儿童队列纵向研究的全国代表性数据集。分析涉及从 4-5 岁儿童开始的多次波。主要分析使用了 2723 名 16-17 岁青少年的样本（平均值，SD = 16.45, 0.50；49.2% 女性，50.8% 男性）。创建父母温暖轨迹（从 4-5 岁到 16-17 岁）并用于探索父母温暖的生命历程对青少年亲社会行为的累积影响（在青少年 16-17 岁时测量）。三种轨迹被描述为一致（28.7%）、略有下降（51.4%）和温暖下降（19.8%）。这些与亲社会行为有关；温暖程度略有下降的青少年出现亲社会行为最高的可能性是温暖程度持续的青少年的 2.2 倍。父母持续的温暖可能为青春期中期亲社会行为的增加提供最大的好处。