Thestates that psychological and behavioral differences between boys and girls become greater during adolescence because increased socialization pressures to conform to traditional masculine and feminine gender roles.

The answer is the gender-intensification hypothesis.

Explanation:

The gender-intensification hypothesis consists of the idea that adolescents experience some kind of pressure related to gender roles regarding the cultural aspect. These pressures can come from different sources and it is said that they pretend to prepare adolescents to assume their different roles as men and women.

Gender intensification has been a way to explain the formation of some  characteristics in which gender differences are important during  adolescence. Because of these pressures, it is said that adolescents could be better differentiated regarding their gender-role identities.    

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