Moore G A, Cohn J F, Campbell S B
Department of Psychology, University of Pittsburgh, Pennsylvania 15260, USA.
Dev Psychol. 1997 Sep;33(5):856-60. doi: 10.1037//0012-1649.33.5.856.
To evaluate within-family differences in maternal affective behavior toward siblings, face-to-face interactions were observed between 39 mothers and their firstborn and second-born infants at 2 months of age. Mother and infant affect was coded on a 1-s time base with behavioral descriptors. Mothers were more positive with second-born infants, and second-born infants were more positive than were firstborns. The siblings' affective behaviors were unrelated, but maternal positive affect was both moderately stable between siblings and correlated with each infant's affect. Thus, in the context of stable individual differences in maternal positive affect, siblings experienced unique affective interactions with their mothers as early as 2 months.
为评估母亲对兄弟姐妹情感行为的家庭内部差异，研究观察了39位母亲与其2个月大的头胎和二胎婴儿之间的面对面互动。母亲和婴儿的情感以行为描述符为基础在1秒时间内进行编码。母亲对二胎婴儿更积极，二胎婴儿也比头胎婴儿更积极。兄弟姐妹的情感行为没有关联，但母亲的积极情感在兄弟姐妹之间具有适度稳定性，且与每个婴儿的情感相关。因此，在母亲积极情感存在稳定个体差异的背景下，兄弟姐妹早在2个月大时就与母亲经历了独特的情感互动。
