Gender differences are of interest in a wide range of disciplines. This diversity is reflected within this book, which provides a contemporary account of sex differences in areas such as social skills, play behaviour, creativity, motivation, temperament, classroom behaviour, self-esteem, trust, physical and mental health, visuo-spatial skills, spatial learning and imagery. The scientific research includes studies with infants, children, adolescents and adults, with contributions from researchers world-wide. Collectively, the chapters provide an up-to-date account and new insight into differences between males and females throughout development.