关键词: 出生性别比, 公共政策, 集体理性, 个体理性, 帕累托改进

Abstract: From the perspective of the relationship between collective rationality and individual rationality, and collective behavior and individual behavior, this paper takes China’s 34 public policies on governing imbalanced sex ratio at birth(SRB) as examples to analyze public policy’s expression, functions and effects at the individual level. The analysis is done based on the theoretical framework of individual behavior pattern and using content analysis method, and it involves in individual behavior, including dimensions of cognition or attitude, emotion and behavioral intentions. Analytical results indicate that current public policies cover different dimensions of individual behaviors and shape guiding mechanism for individual behavior changes, but with imbalanced impacts and shortage of motions and influential channels. Furthermore, the paper explores the "Pareto improvement" path of individual reproductive behavior changes in line with the public policy mechanism to promote the normalization of high SRB, proposes public policy basis should be changed from "control-orientation" to "support-orientation".