Preemptive interventions for infants and toddlers with a high likelihood for autism: A systematic review and meta-analysis.

Whiteside et al. (2022) looked at every trial that coached parents of babies who had a high chance of later autism. They wanted to know if teaching parents early helps kids grow better.

The team pulled together all parent-training studies for infants and toddlers. Then they ran a meta-analysis to see if the coaching really moved child skills.

Parents learned the strategies every time. Their ratings went up like clockwork.

Child gains were hit-or-miss. When parents used the moves well, kids made progress. When parents drifted, scores stayed flat.

Klusek et al. (2022) shows the same pattern in the real world. In a big community roll-out of the Social ABCs, toddlers only improved when parents kept the techniques alive at home.

Rouhandeh et al. (2022) squeezed the same idea into just four weeks. Brief coaching still lifted both parent skill and child social talk, backing the claim that parent use is the key lever.

Byiers et al. (2025) widens the lens. Their map of 69 baby studies says behavioral work is booming for 0-2 year olds, but most trials skip the parent-implementation check. H et al. fills that gap by showing quality beats quantity.

You can start parent coaching before a firm autism diagnosis. Teach a few clear moves, then watch the parent, not just the child. If mom or dad drifts, pause and retrain before adding new goals. Quick parent fidelity checks each visit tell you whether the child gains will stick.