In the current study (a) maternal insightfulness into the experience of the child and (b) resolution with respect to the child’s diagnosis and their associations with children’s security of attachment were examined in a sample of 45 preschoolers (mean age = 49 months) with autism spectrum disorders (ASD). It was hypothesized that mothers who were insightful and resolved would be more likely to have securely attached children than mothers who were neither insightful nor resolved. The findings supported this hypothesis. The implications of insightfulness and resolution for child attachment in the context of ASD are discussed.