The goal of the present study was to examine the predictive relation between an individual's newborn status, as rated with the Neonatal Perception Inventories (NPI), and his or her adult attachment organization, as rated with the Adult Attachment Interview (AAI). All participants (N = 26) had been healthy, full-term, singleton, first-born infants whose mothers were recruited during the immediate postpartum hospital stay. The NPI were collected during home visits made when infants were 4–6 weeks old. The AAI was administered 30 to 40 years later. The study hypothesis was that adult participants whose mothers had held negative perceptions of them as newborns would be more likely to be classified as insecure on the AAI than participants whose mothers had held positive perceptions of them. The study hypothesis was supported. A 2 (positive NPI vs. negative NPI) × 2 (secure AAI vs. insecure AAI) contingency table analysis indicated a highly significant connection between newborn NPI risk status and adult AAI classification, Fisher's exact test, p < .003, odds ratio = 18. As expected, negative maternal perception at 1-month old was associated with subsequent insecure adult attachment status.