Whiteman Shawn D, Jensen Alexander C, McHale Susan M
Brigham Young University.
Pennsylvania State University.
New Dir Child Adolesc Dev. 2017 Jun;2017(156):67-85. doi: 10.1002/cad.20197.
This study built on research on sibling influences to assess potential bidirectional effects of older and younger siblings' risky behaviors on one another's risky behaviors; our longitudinal design allowed us to test these effects when siblings were at about the same chronological age, at different points in time. We also tested whether the strength and/or direction of effects of siblings' risky behaviors changed from middle adolescence to young adulthood. Reports of risky behaviors (i.e., deviant behaviors and excessive alcohol use) were provided by firstborn and secondborn siblings from up to 201 families on five occasions spanning 10 years. In general, accounting for known covariates, multilevel models revealed bidirectional sibling effects and some evidence that secondborns' risky behaviors were stronger and more consistent predictors of firstborns' behaviors than the reverse. Sibling influence generally declined with age and sibling effects were not moderated by gender constellation. Findings indicate that both older and younger siblings are important socializers of risk behaviors across adolescence and continue to shape each other's alcohol use into early adulthood.
本研究基于对兄弟姐妹影响的研究，以评估年长和年幼兄弟姐妹的危险行为对彼此危险行为的潜在双向影响；我们的纵向设计使我们能够在兄弟姐妹处于大致相同的实足年龄、不同时间点时测试这些影响。我们还测试了兄弟姐妹危险行为的影响强度和/或方向从中年期到青年期是否发生变化。来自多达201个家庭的头胎和二胎兄弟姐妹在跨越10年的五次调查中报告了危险行为（即越轨行为和过度饮酒）。总体而言，在考虑已知协变量的情况下，多层次模型揭示了兄弟姐妹之间的双向影响，并有一些证据表明，二胎的危险行为比头胎的危险行为更能有力且一致地预测头胎的行为。兄弟姐妹的影响通常随着年龄的增长而下降，且兄弟姐妹的影响不受性别组合的调节。研究结果表明，年长和年幼的兄弟姐妹在整个青春期都是危险行为的重要社会化因素，并在成年早期继续相互影响彼此的饮酒行为。
