Trajectories of Copy Behaviors in Infants With Elevated and Typical Likelihood for Autism: Functions and Correlations With Language

This study examined the trajectories of copy behaviors during the first year of life in a group of infants at elevated likelihood for autism (EL) and a group with a typical likelihood for developing autism (TL). It also explored the function of these behaviors in interaction situations, and the correlations between imitated behaviors and language. To this end, a task was designed to elicit mimetic and imitative behaviors, the Traberitea Infant Mimicry and Imitation Task. The results revealed distinct trajectories for mimetic and imitated behaviors, with no significant differences between the two groups. The most prevalent function observed in both groups was the instrumental function; however, an interaction effect was observed in the social function. At 12 months, the mean frequency of the social function was lower in the EL group than in the TL group, though with a small effect size. There were primarily correlations with expressive language in the EL group for both imitation with social function and with instrumental function. These findings are discussed from a perspective that looks toward protective factors and resilience (Elsabbagh 2020), and future implications are suggested regarding the implementation of preemptive enrichment programs for development.