Final answer:
Fausto Sterling's longitudinal study of mother-infant dyads aimed to understand the development of attachment between mothers and infants over time.
Step-by-step explanation:
Fausto Sterling's longitudinal study of mother-infant dyads was a research project focused on understanding the development of attachment between mothers and their infants over time. The study aimed to investigate if there were differences in the ways that children formed attachments and to explore the reasons behind these differences. By observing the interactions between mothers and infants in various situations, Sterling examined how attachment patterns evolved and how they influenced the psychosocial development of the child.