Autistic juvenile defendants: How defendant race and offense type affect juror decisions.

Researchers studied how knowing a young person has autism affects mock jury decisions. They found that when jurors knew the defendant had autism, they were much less likely to find them guilty and gave lighter sentences. Jurors also saw autistic defendants as more likable and honest. Surprisingly, White defendants were more likely to be found guilty than Black defendants. This shows how autism diagnosis can influence legal decisions in complex ways.

This experimental study examined how autism spectrum disorder (ASD) diagnosis, defendant race, and offense type influence mock juror decisions in juvenile cases. Using vignettes with 466 participants, researchers found that defendants with ASD diagnoses received significantly more not guilty verdicts and lenient sentences, particularly for violent offenses. Participants rated defendants with ASD as more likable, honest, and believable, which mediated more lenient sentencing. Interestingly, White defendants were twice as likely to be found guilty compared to Black defendants.

The findings reveal complex interactions between neurodevelopmental diagnoses, race, and public perceptions in legal contexts, highlighting potential biases that could impact judicial outcomes for autistic youth.

Results suggest ASD diagnoses may create protective bias in legal settings, potentially leading to inconsistent justice outcomes. This highlights the need for judicial education about autism, standardized guidelines for presenting neurodevelopmental information in court, and awareness of how diagnostic labels may influence legal decision-making beyond relevant factors.

This was a mock juror study using vignettes rather than real court cases, which may not reflect actual judicial decision-making. The study design and sample characteristics are not fully described in the abstract, limiting assessment of generalizability and methodological rigor.

This study explores whether providing information about a juvenile defendant's autism spectrum disorder (ASD) diagnosis, the type of offense (violent/nonviolent), and their race influences laypersons' credibility evaluations and legal decisions (verdicts/sentencing). We expected participants to render more not guilty verdicts and show leniency in sentencing when the defendant is White, has an ASD diagnosis, and is charged with a nonviolent offense. We anticipated credibility evaluations would mediate the relationships between ASD diagnosis and race, type of offense and sentencing views. Using a mock-juror paradigm, 466 participants read a vignette in which the juvenile defendant's diagnosis (ASD + information vs. no diagnosis), race (White vs.

Black), and the charged offense (violent vs. nonviolent) were experimentally manipulated. Participants were highly unlikely to render guilty verdicts (< .001, OR = 0.33) and harsh sentences (< .001, η² = .11) when the defendant had an ASD diagnosis, even less so for violent offenses (= .005, η² = .02). The defendant's likability (p < .001, η² = .04), honesty (< .001, η² = .11), and believability (< .001, η² = .09) were rated higher when the defendant had an ASD diagnosis, and these considerations led to significantly more lenient sentences compared to the no diagnosis condition. Participants were also twice as likely to find the White defendant guilty (= .003,= 1.95) and reported being significantly more certain in their verdicts for the White defendant (= .017, η² = .02).

These results highlight the complex interplay between defendant characteristics and public perceptions of ASD in criminal legal proceedings. Findings highlight the need for judicial education, clearer guidelines on presenting ASD information in court, and further research on how race and neurodevelopmental diagnoses influence legal decisions. (PsycInfo Database Record (c) 2025 APA, all rights reserved).