In its Spring ’08 issue, Ms. asks: What’s the measure of a woman? Too often, it feels like it’s the width of our waists rather than the content of our characters. Drawing on new research, professor Caroline Heldman tells how women increasingly see ourselves as visual objects in our media-saturated, body-obsessed culture. The result? Huge hidden costs for our self-esteem, our brainpower, and even our sex lives.