Alexandra M. Columbus 
Advances in Psychology Research. Volume 75 

This continuing series presents original research results on the leading edge of psychology. Each article has been carefully selected in an attempt to present substantial results across a broad spectrum. This book reviews research on self-concept and healthy lifestyles in adolescence; knowledge, attitudes and behaviors associated with HIV/AIDS; contingency theory; gender differences in proneness to depression and preadolescent and early adolescent friendships and adulthood adjustment.