A discussion of pop culture messages about masculinity, their impact on boys, and the benefits of introducing more gender balance to boys' lives.

When most people think about gender stereotypes and children, they envision princesses, dolls, and pink clothing. Few consider the warriors, muscle-bound action figures, and T-shirts covered in graffiti and skulls that are assumed to signify masculinity.

The pop culture environment that surrounds boys introduces them to a world where traditionally masculine traits-like toughness, aggression, and stoicism-are highly esteemed and where female...