Intangible motivation and resistance to temptation.
D000124:Achievement; D001290:Attitude; D002648:Child; D002652:Child Behavior; D002675:Child, Preschool; D003163:Competitive Behavior; D005260:Female; D006801:Humans; D008297:Male; D009014:Morals; D009042:Motivation; D012056:Reinforcement, Social; D012737:Sex Factors