Hart Sybil, Carrington Heather
Department of Human Development and Family Studies Texas Tech University.
Infancy. 2002 Jul;3(3):395-402. doi: 10.1207/S15327078IN0303_6. Epub 2002 Jul 1.
Thirty-two 6-month-old infants were exposed to their mothers attending, in turn, to a lifelike baby doll and a book. Infant negativity was greater when maternal attention was directed toward the social object, suggesting the presence of an early form of jealousy by 6 months of age.
32名6个月大的婴儿依次接触他们的母亲照料一个逼真的娃娃和一本书的情景。当母亲的注意力指向社交对象时,婴儿的消极情绪更强,这表明6个月大时就存在早期形式的嫉妒心理。