Does mood vary as a function of age, sex, or situation/ In four investigations, 6,452 persons aged 4 to 99 were interrupted at leisure, at home, at school, and at work and asked to assess their mood as being happy, neutral, or unhappy. Moods of happiness and neutrality were each reported about 45% and unhappiness about 10% of the time. Females more frequently reported moods of happiness r unhappiness than males, while mood did not vary as a function of age. Persons at leisure reported more affectively pleasant moods than those at work, at home, or at school. Persons of higher socioeconomic status reported more happy moods than those of lower status. In another study, a class of 255 students was administered various personality scales and then interrupted 21 times over the course of the quarter and their mood indexed. Tested religiosity negatively correlated with frequency of pleasanv moods, the barron ego-strength scale was uncorrelated with frequency of kind of mood, and the eysenck neuroticism scale correlaed with frequency of unpleasant moods.