Dyadic Interactions in Depressed and Non-Depressed Mothers and Their Infants

This study will examine 1) differences among mothers behaviors and how these behaviors influence their infants reactions, and 2) how mother-child interactions relate to children s temperament, and cognitive (thought processing) abilities, and other areas of development. Depressed and non-depressed English-speaking mothers between 20 and 45 years of age, with an infant 4 months or younger, may be eligible for this study. Candidates will be screened with a mailed survey regarding their moods and feelings. Participants will undergo the following procedures: * Psychiatric Interview: Subjects will participate in a 30-90 minute interview consisting of a series of standardized questions about the their behaviors and feelings. Participants whose interviews suggest a condition that may impact their mental health will be referred to the study clinician for follow-up to confirm or clarify the preliminary findings. Continued participation in the study will be determined following this. * Home Visit: A study investigator will visit the home for 1 hour to film the mother and baby during the mother s typical daily activities. This visit will take place when the baby is about 5 months old. At the end of the visit, the mother will be given a variety of surveys to fill out at home and return at the next visit (see Lab Visit below). The survey questions deal with the mother s relationship with her partner, support from people in her life, typical behaviors of her infant, and how often she feels certain emotions. A packet of surveys will also be left for the participant s partner to complete and mail back to the investigator. The partner may or may not be the child s biological father and may or may not choose to participate in the study. * Lab Visit: Within 1 week of the home visit, the mother and child will come to the NICHD clinic for about 2 hours. During this time, the mother will return the previous surveys and fill out another one regarding her current mood. She will then inte