SLPOtherAutism : the international journal of research and practice2024

Autistic adults' inclination to lie in everyday situations.

Ralph Bagnall, Ailsa Russell, Mark Brosnan and 1 others

PMID 37572035

WHAT IT FOUND

Autistic and non-autistic adults reported a similar inclination to lie in everyday situations.

Autistic adults rated themselves poorer liars, and their reported lying tendency was associated with their views about lying and their speed on a lie task.

Key findings

01There was no significant difference between autistic and non-autistic adults in reported inclination to lie or in viewing lying as acceptable.

02On a self-rated 10-point lying ability scale, the non-autistic group had a higher adjusted mean score (6.52) than the autistic group (4.56).

03Lie acceptability was associated with inclination to lie in both groups, while reaction-time and self-rated lying ability were associated only in autistic adults and understanding others' minds and working-memory scores only in non-autistic adults.

STILL TO COME

How it was doneWhat they foundWhat it means for SLPs

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What it does not show

The study is cross-sectional and online, so it cannot show that any factor causes a change in lying behaviour or that a therapy would change it. Participants completed tasks remotely, and the researchers had little control over testing conditions. The autistic group was older than the non-autistic group, and age was controlled statistically rather than by matching. The sample included more female than male participants in both groups, and the paper says this is not representative of the general autistic population. Autism status was self-reported, and no formal diagnosis evidence was requested. Autism community members were not involved in the design, implementation or interpretation of the study. Only one measure was used for each main idea, including one questionnaire for inclination to lie, so the results may reflect the measure rather than real-world behaviour. Some differences were significant before correcting for multiple comparisons but not after, so secondary findings should be read cautiously. The paper reports exclusions and removals in a way that leaves the final sample description unclear, while still reporting 41 autistic and 41 non-autistic participants.

Declared interests

The only funding statement supplied is that the Economic and Social Research Council funded the PhD research.

The easy way to misread this

Do not conclude that autistic adults are less inclined to lie. The main comparison was not significant. Also, do not treat the self-rated lying ability difference or the correlations as evidence about real-world lying or as a basis for intervention.

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