A total of 48 mother-infant pairs were observed and rated in face-to-face interaction when the infant was 4 months old, and in the Ainsworth Strange Situation when the infant was 12 months old. Mothers' marital satisfaction and social support, and the involvement and support of the child's father, were assessed. The mothers constituted a low socioeconomic status, racially mixed sample. Results indicated no effects of infant birth status or gender, maternal age, race, or marital status on the infant's attachment classification at 12 months. Results also indicated that the father's involvement predicted the infant's attachment classification at 12 months. Maternal behavior at 4 months, marital satisfaction, and social support did not predict attachment classification. (BC)