Randomized controlled trial for early intervention for autism: a pilot study of the Autism 1-2-3 Project.

Dolezal et al. (2010) tested a two-week parent coaching program called Autism-1-2-3. Parents learned to prompt eye contact, gestures, and first words during daily play with their newly diagnosed preschooler.

Twenty kids were randomly picked for the program or a wait list. Trainers visited homes for six one-hour sessions over the study period.

After two weeks, the coached kids used more words, looked at faces longer, and played with toys in new ways. Parents also said they felt less stress.

The wait-list group stayed the same. Gains were small but real enough to see in short videos.

Wetherby et al. (2018) later showed parents can get the same kind of gains online. Their three-month web coaching lifted toddler social-communication skills, proving you do not need in-person visits.

Perez et al. (2015) used weekly video calls to teach parents a different skill—how to replace problem behavior with words. Challenging behavior dropped a large share. Together, these studies extend Autism-1-2-3 by showing telehealth works and can target more than just language.

Vivanti et al. (2014) tested a group version of early ABA. Kids in community childcare made similar language gains, showing the method works in 1:the groups, not just 1:1 parent coaching.

You can start parent coaching right after diagnosis, even before long wait lists clear. Two weeks of daily play lessons can jump-start language and social skills while lowering parent stress. If families cannot come to clinic, switch to video coaching—later studies show it still works.