A substantial amount of research has suggested that women do, on average, express emotions more frequently than men.[1] In the Handbook of Emotions, Leslie R. Brody and Judith A. Hall report that this difference in emotional expression starts at a young age, as early as 4 and 6 years old, as girls begin to express more sadness and anxiety than their male counterparts.[4] Brody and Hall (2008) report that women generally smile, laugh, nod and use hand gestures more than men do. The only known exception to this rule is that men more frequently express anger.