Imitation, recall, and imitativeness in children with low intelligence of organic and familial etiology.

Sanders et al. (1989) watched how kids with low IQ copy and remember actions. They split the kids by cause: some had brain injury (organic) and some had family-linked low IQ (familial). Each child saw a short sequence of moves with toys. Later the child had to do the moves from memory. The team scored how many moves were copied and how many were recalled.

Familial kids copied and remembered more moves overall. Organic kids copied fewer moves, but they kept copying even silly or useless steps. Their copying did not drop with age. The study found mixed results: better memory in one group, more over-imitation in the other.

Penney et al. (2019) extends these clues. They taught parents to prompt imitation in preschoolers with autism. After a quick coaching add-on, parents used the moves correctly and some kids copied more. The 1989 paper warns us to watch for over-copying in organic cases; the 2019 paper shows we can train adults to shape useful imitation.

Witt et al. (2020) used the same mental-age match method. They saw no gap between ID and typical kids in learning new words once mental age was equal. R et al. found a gap in imitation even after matching. The tasks differ—words versus actions—so the gap may sit in the motor-copy system, not general learning.

Vakil et al. (2011) also compared ID and typical groups. Eye tracking revealed that adults with ID used a different strategy during analogies. Likewise, R et al. showed that organic kids use a different copy style: they echo everything, not just the goal. Both papers say the same thing: expect process differences, not just lower scores.

Before you teach a chain of steps, ask why the child has low IQ. If the cause is brain injury, plan extra trials to fade out useless moves. If the cause is familial, the child may need fewer prompts but stronger memory aids. Use brief parent coaching like Penney et al. (2019) and keep the task matched to the child’s mental age, not birthday.