Moreover, a study done by Carol Martin (1989) found that boys 4.5 years of age expressed significantly more dislike for a girl depicted as a "tomboy" than a boy depicted as a "sissy"; whereas boys 8.5 years of age express more dislike for a boy depicted as a "sissy".
除此之外， 一個Carol Martin (1989) 的研究，發現 4.5歲大的男孩明顯地表達出更不喜歡一個女孩表現地像男孩，比起一個男孩表現地像女孩；但是，男孩在8.5歲時會表達出更加不喜歡一個男孩表現的像女孩。