Can allostatic load cross over? Short-term work and nonwork stressor pile-up on parent and adolescent diurnal cortisol, physical symptoms, and sleep.
基于465天日记数据，研究发现父母和青少年的压力累积分别增加各自的身体症状，且非工作压力累积与更陡的皮质醇斜率相关；睡眠时长存在曲线交叉效应，即一方压力累积与另一方睡眠减少相关，但极端水平下关系反转。
= 465 daily observations with cortisol) were used to test the study hypotheses. Parent work stressor pile-up and adolescent stressor pile-up were associated with increased daily physical symptom likelihood in parents and adolescents, respectively. Counter to expectations, parent nonwork stressor pile-up was associated with steeper daily cortisol slopes. Additionally, we found curvilinear crossover effects for sleep quantity, such that parent nonwork stressor pile-up and adolescent stressor pile-up were associated with shorter sleep duration among adolescents and parents (respectively), but this relationship plateaued and reversed as daily pile-up increased to more extreme levels. Our article explores conceptual and operational pile-up definitions (level of analysis, length of time window, inclusion of the current-day stressor events). Individual-level analyses supported more consistent, positive linear relationships between stressor pile-up and strains. Time window had little consequences for conclusions, but inclusion of the current day yields some alternative conclusions. We discuss implications for understanding stressor pile-up across domains and across parent-child dyads as it relates to daily strain within the family system. (PsycInfo Database Record (c) 2025 APA, all rights reserved).