Positive affect and positive parent-adolescent relationships have been found to reinforce one another across youth development in a pattern of an “upward spiral,” yet little is known regarding processes facilitating such “upward spirals” of social and emotional wellbeing among parent-adolescent dyads. This study addressed this gap by examining interpersonal capitalization, or the process of sharing positive news with others, as one candidate interpersonal process contributing to increases in both parent and adolescent experiences of positive affect in naturalistic settings. Participants included 146 adolescents (52.1% girls; ages 10–14; M[SD] = 12.71[0.86]) and a participating caregiver (N = 139; 78.7% mothers; ages 33–58; M[SD] = 44.11[5.08]) who completed a dyadic experience sampling method procedure assessing both parent and adolescent momentary affect and patterns of engagement in interpersonal capitalization in daily life settings (31 surveys across 9 days). Multilevel models indicated that adolescent positive affect increased following instances of interpersonal capitalization, and increases in positive affect were specific to high-arousal positive emotions (e.g., excited, energetic) relative to low-arousal positive emotions (e.g., calm, relaxed). Parental high-arousal positive affect also increased following instances in which they provided validating, enthusiastic responses to their children’s capitalization attempts. The results of the present study indicate that interpersonal capitalization may be one mechanism facilitating “upward spirals” of positive affect for both parents and adolescents, with implications for health and wellbeing across development.

已经发现积极的影响和积极的父母-青少年关系以一种“向上螺旋”的模式在青年发展过程中相互加强，但对于促进这种“向上螺旋”的过程，在父母-青少年二人之间的社会和情感福祉方面却知之甚少. 本研究通过检查人际资本化或与他人分享积极消息的过程来解决这一差距，作为一个候选的人际过程，有助于增加父母和青少年在自然环境中的积极影响体验。参与者包括 146 名青少年（52.1% 女孩；10-14 岁；M[SD] = 12.71[0.86]）和一名参与照顾者（N = 139; 78.7% 的母亲；33-58 岁；M[SD] = 44.11[5.08])，他们完成了一项二元经验抽样方法程序，评估了父母和青少年在日常生活环境中的人际资本化的瞬时影响和参与模式（9 天的 31 项调查）。多层次模型表明，在人际资本化的情况下，青少年积极情绪增加，积极情绪的增加特定于高唤醒积极情绪（例如，兴奋、精力充沛）相对于低唤醒积极情绪（例如平静、放松）。在他们对孩子的资本化尝试提供有效的、热情的回应的情况下，父母的高唤醒积极影响也增加了。双方父母和青少年，对健康的影响和跨越发展福利。