Abstract
This research examined the effects of mastery on the depressive symptoms of mothers, from the viewpoint of coping. Mastery expresses a sense of control over various events, and was believed to be a psychological factor related to depressive symptoms of mothers. The authors conducted an investigation on depressive symptoms, mastery, coping, and stress. Of the 21 mothers who participated, nine had high mastery while five had low mastery. The results indicated that mothers with high mastery used a considerable amount of problem-focused coping, and did not readily develop depressive symptoms. In addition, these mothers attempted to expand their personal networks; hence, they acquired emotional support from more sources, compared to mothers with low mastery. Finally, it was suggested that even if mastery were high, depression increased when the situation did not improve. The discussion considered a method of intervention and support for mothers with depressive symptoms.