RCTJournal of autism and developmental disorders2026

Professional Development in Autism and Multilingualism for Behavior Analysts: A Randomized Waitlist Control Trial.

Melanie R Martin Loya, Hedda Meadan, Xun Yan

PMID 39951211

WHAT IT FOUND

A 50-minute online training improved behavior analysts' knowledge and self-efficacy about supporting multilingual autistic children, but did not change their attitudes.

The study was underpowered, so it shows what a short webinar can teach, not what it changes.

Key findings

01The intervention group's mean knowledge score rose from 14.84 to 17.44 on a 19-point scale, compared to 14.66 to 15.91 in the waitlist control group.

02Self-efficacy scores rose from 61.33 to 64.65 in the intervention group versus 62.91 to 63.62 in controls, a statistically significant interaction.

03Attitude scores did not change significantly, with the intervention group moving from 19.65 to 18.95 (lower is more favorable) versus 19.30 to 19.89 in controls.

STILL TO COME

How it was doneWhat they found

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What it does not show

The study was underpowered, with 90 participants analyzed against a target of 128, which may have masked true effects on attitudes. Participants were self-selected and already held relatively positive attitudes toward multilingualism at baseline, leaving little room for improvement. The study measured knowledge and self-efficacy but did not assess whether these changes translated into actual practice or patient outcomes. Social desirability bias may have influenced responses because participants had to provide personal information to receive their continuing education credit.

Declared interests

No specific funding source or conflict of interest declaration is reported in the provided text.

The easy way to misread this

Do not conclude that this training changes clinical attitudes or behavior. The attitude outcome was null, and the study did not measure whether providers actually changed how they worked with multilingual families.

Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →


The study

Participants
90 analyzed
Certainty of evidence
Moderate

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    Melanie R Martin Loya, Hedda Meadan, Xun Yan Professional Development in Autism and Multilingualism for Behavior Analysts: A Randomized Waitlist Control Trial. Journal of autism and developmental disorders. 2026.

    Read the original — we summarise, we never replace the paper.