Both men and women valuing tradition and conformity had lower heterosociality—such men had more guy friends, women more gal friends. Regardless of personal preferences (e.g. a woman who might actually want to have more guy friends), such values incline people to follow expectations, even if it might mean suppressing authenticity. Breaking the mold by having cross-sex friends would be too uncomfortable emotionally, psychologically, and socially off-limits.
Philosophy . Political Philosophy. Poetry . Psychology . Perspectives (on 10,000 things)
Know Thyself 