Changes in Electroencephalogram Coherence in Adolescents With Autism Spectrum Disorder After a Social Skills Intervention.
PEERS classes strengthened occipital-temporal brain links in autistic teens, and the size of that change predicted more real-life peer contact.
01Research in Context
What this study did
The team ran a randomized trial of PEERS® for autistic teens.
Half got the 16-week social-skills class. Half stayed on a waitlist.
Before and after, the teens wore EEG caps while resting. The researchers looked at brain-wave coherence in vision and language areas.
What they found
After PEERS®, brain links between occipital and temporal sites grew stronger.
The waitlist group showed no change.
Bigger coherence jumps went hand-in-hand with more peer get-togethers and better parent-rated social skills.
How this fits with other research
Płatos et al. (2022) ran a near-copy study in Poland and also saw large social gains, showing the effect travels across cultures.
Wyman et al. (2020) sounds like it clashes: they saw weak generalization when autistic students also had cognitive delays. The key difference is that Garwood et al. (2021) only included high-functioning teens, so the mixed 2020 results likely reflect added learning challenges, not a failure of PEERS itself.
Moya et al. (2022) push PEERS downward to preschoolers and find similar parent-child benefits, proving the model can scale across ages.
Why it matters
You now have brain data that says PEERS does more than teach rules; it rewires connectivity linked to real friendships. When you pitch the program to skeptical parents or schools, you can say stronger EEG coherence tracks with more weekend hangouts. Use that evidence to keep PEERS on the IEP menu for high-functioning autistic teens.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Add EEG coherence graphs to your next PEERS parent orientation slide deck to show the neural 'why' behind the program.
02At a glance
03Original abstract
Autism spectrum disorder (ASD) is a developmental condition that affects social communication and behavior. There is consensus that neurological differences are present in ASD. Further, theories emphasize the mixture of hypo- and hyper-connectivity as a neuropathologies in ASD [O'Reilly, Lewis, & Elsabbagh, 2017]; however, there is a paucity of studies specifically testing neurological underpinnings as predictors of success on social skills interventions. This study examined functional neural connectivity (electroencephalogram [EEG], coherence) of adolescents with ASD before and after the Program for the Education and Enrichment of Relational Skills (PEERS®) intervention, using a randomized controlled trial of two groups: an Experimental ASD (EXP) Group and a Waitlist Control ASD (WL) Group. The study had two purposes. First, the study aimed to determine whether changes in EEG coherence differed for adolescents that received PEERS® versus those that did not receive PEERS®. Results revealed a significant increase in connectivity in the occipital left to temporal left pair for the EXP group after intervention. Second, the study aimed to determine if changes in EEG coherence related to changes in behavior, friendships, and social skills measured by questionnaires. At post-intervention, results indicated: (a) positive change in frontal right to parietal right coherence was linked to an increase in social skills scores; and (b) positive changes in occipital right to temporal right coherence and occipital left to parietal left coherence were linked to an increase in the total number of get-togethers. Results of this study support utilizing neurobehavioral domains as indicators of treatment outcome. Lay Summary: This study examined how well various areas of the brain communicate in adolescents with ASD before and after a social skills intervention. Results revealed increased connectivity in the adolescents that received the intervention. Secondly, the study aimed to determine if changes in connectivity of brain areas related to changes in behavior, friendships, and social skills. Results indicated that changes in connectivity were also linked to increased social skills. Autism Res 2021, 14: 787-803. © 2021 International Society for Autism Research and Wiley Periodicals LLC.
Autism research : official journal of the International Society for Autism Research, 2021 · doi:10.1002/aur.2459