Autism & Developmental

Joint Engagement and Socially Motivated Language in Young Autistic Children.

Kosloski et al. (2025) · Journal of autism and developmental disorders 2025
★ The Verdict

Pathways parent coaching nudges autistic toddlers into more shared looking and smiling without boosting word count.

✓ Read this if BCBAs running early-intervention home programs or coaching parents of 2-young learners with ASD.
✗ Skip if Clinicians seeking a direct language-acceleration protocol or working solely in center-based groups.

01Research in Context

01

What this study did

Researchers tested Pathways, a 12-week parent coaching program, with 52 autistic toddlers . Parents learned to follow the child’s lead, copy play, and wait for communication bids during daily home routines.

Families were split into two groups. One group got Pathways plus usual services. The other kept their usual services only. Trained observers coded every 10-second slice of video for three types of engagement without knowing which group the child was in.

02

What they found

Kids in Pathways spent more time in coordinated joint engagement—looking back and forth between parent and toy while sharing smiles or words. They also spent less time in onlooking, where the child simply watches without joining in.

Effect sizes were small to medium. Surprisingly, the number of different words the children said did not change. The program moved kids into warmer social states, but it did not act as a direct language booster.

03

How this fits with other research

Klusek et al. (2022) ran a similar parent-training program called Social ABCs in the community and saw language gains over the study period. Pathways did not replicate that word growth, even though both teach parents to be responsive. The difference may lie in measurement: Jessica counted any new words parents heard, while E et al. used strict vocabulary coding from video.

Wan et al. (2023) added interactive games to behavioral skills training and reported large social-cognitive jumps. Their classroom games produced bigger effect sizes than the home-based Pathways coaching. Setting matters: peers plus playful structure can amplify gains beyond parent-only work.

Caplan et al. (2019) showed that naturally high responsive parenting forecasts later teacher-rated social skills. Pathways proves you can train that responsiveness and move the needle within three months, turning a correlational clue into an actionable tactic.

04

Why it matters

If you serve toddlers with ASD, Pathways gives you a ready manual to send home. Coach parents to watch, wait, and respond when the child shifts gaze between face and toy. You may not see a vocabulary spike, but you will likely see warmer, more shared moments—fuel for later language and peer play. Start with one routine, like toy play or snack, and track who looks at whom first; that simple tally tells you if joint engagement is rising.

Free CEUs

Want CEUs on This Topic?

The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.

Join Free →
→ Action — try this Monday

Pick one home routine and teach parents to pause, copy the child’s action, and wait for eye contact before giving the next toy.

02At a glance

Intervention
parent training
Design
randomized controlled trial
Sample size
47
Population
autism spectrum disorder
Finding
positive
Magnitude
small

03Original abstract

PURPOSE: This study investigated the social motivation underlying young autistic children's language and time spent in engagement states [adapted from Bottema-Beutel et al., (2014) and ranging from less social to more social] during interactions with parents. We examined (1) autistic children's time and words per minute (WPM) in each engagement state; (2) the relationship between time in engagement states and the social motivation (SM) of utterances; and (3) the effect of the Pathways intervention on time in engagement states. METHODS: This secondary analysis used video recordings of 10-min naturalistic interactions between 47 young autistic children (mean age = 36.23 months, SD = 7.89) and their parents. Families were randomized to either Pathways or services-as-usual (SAU). Videos were coded for engagement states, and child utterances were transcribed and coded for degree of SM using a novel coding scheme that captured attention (visual and auditory) and communicative intent. Data were analyzed using descriptive statistics, correlations, and hierarchical regression analyses. RESULTS: On average, children spent more time and produced more WPM during less social engagement states. Regression analyses revealed significant small-to-medium effects of (a) frequency of utterances with the lowest SM score on time in Object Engagement (less social; SAU > Pathways); and (b) frequency of utterances with higher SM scores on time in Coordinated Joint Engagement (more social; Pathways > SAU). CONCLUSION: Findings emphasize the difference between autistic children's WPM and use of SM utterances, highlighting the need to differentiate expressive language from social language as distinct outcomes for this population.

Journal of autism and developmental disorders, 2025 · doi:10.1371/journal.pone.0188446