This study was an attempt to investigate some of the psychological changes that occur during first pregnancy and the early postpartum months. The major theoretical assumption was that pregnancy and early motherhood may be viewed as a series of developmental tasks, and that the way in which these are coped with will be predictive of adaptation to the maternal role. The aims of the study were (a) to identify the affective changes that occur in women during first pregnancy and to assess the extent to which pregnancy and motherhood are experienced as a period of psychological crisis; (b) to trace the development of maternal feeling; and (c) to assess the extent to which characteristics measured early in pregnancy are predictive of attitudes and adjustment to later stages of pregnancy and the degree to which these factors are themselves predictive of adaptation to parenthood. The sample consisted of 19 white, middle class primigravidas, with an age range of 22-33 years. Only women who had no previous gynecological or psychiatric difficulties and who were currently living with their husbands were accepted as Ss. Each woman was interviewed at each trimester of pregnancy, on the third postpartum day, and at 2 months postpartum. A follow up questionnaire was mailed at 7 months postpartum, The data obtained were derived from ratings of extensive interview schedules and a number of personality measures. Results indicated that although emotional upheaval and rapid change were characteristic of pregnancy, for some women a growing sense of adulthood, of fulfillment, and integration of a new maturational stage clearly co-existed with the emotional disequilibrium. Analysis of the interrelationship among characteristics shown in early pregnancy, adjustment to the pregnancy overall, and adaptation to parenthood indicated that the degree of personality integration achieved by early pregnancy was predictive of the extent to which psychological growth was experienced throughout pregnancy and early parenthood.