FREE TO BE YOU AND ME:

Sandberg's goal is to liberate her fellow Americans from the stereotypes of gender. But is that truly liberating? In a 2008 study in the Journal of Personality and Social Psychology, a group of international researchers compared data on gender and personality across 55 nations. Throughout the world, women tend to be more nurturing, risk averse and emotionally expressive, while men are usually more competitive, risk taking, and emotionally flat. But the most fascinating finding is this: Personality differences between men and women are the largest and most robust in the more prosperous, egalitarian, and educated societies. According to the authors, "Higher levels of human development--including long and healthy life, equal access to knowledge and education, and economic wealth--were the main nation-level predictors of sex difference variation across cultures." New York Times science columnist John Tierney summarized the study this way: "It looks as if personality differences between men and women are smaller in traditional cultures like India's or Zimbabwe's than in the Netherlands or the United States. A husband and a stay-at-home wife in a patriarchal Botswanan clan seem to be more alike than a working couple in Denmark or France."

Why should that be? The authors of the study hypothesize that prosperity and equality bring greater opportunities for self-actualization. Wealth, freedom, and education empower men and women to be who they are. 

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