Birds of a Feather Earn Together
利用巴西行政数据，研究发现同性别同伴对工资的影响约是跨性别同伴的两倍，且性别更平等的环境中两类效应差距缩小。
<h3>Abstract</h3> Utilizing comprehensive administrative data from Brazil, we investigate the impact of peer effects on wages, considering both within-gender and cross-gender dynamics. Since the average productivity of both individuals and their peers is unobservable, we estimate these values using worker fixed effects while accounting for occupational and firm sorting. Our findings reveal that within-gender peer effects have approximately twice the influence of cross-gender peer effects on wages for both men and women. Furthermore, we observe a reduction in the disparity between these two types of peer effects in settings characterized by greater gender equality.