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Revisiting the ownership effect in adults with and without autism

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  • Marchella Smith
  • David Williams
  • Sophie Lind
  • Heather J Ferguson

Abstract

Self-owned items are better remembered than other-owned items; this ownership effect reflects privileged processing of self-related information. The size of this ownership effect has been shown to decrease in neurotypical adults as the number of autistic traits increases, and is reduced in autistic adults. However, emerging evidence has questioned the reliability of these findings. This paper aimed to replicate previous work using well-powered, pre-registered designs, and Bayesian analyses. Experiment 1 (N = 100) found a significant ownership effect in neurotypical adults; however, the size of this was unrelated to individual differences in autistic traits. Experiment 2 (N = 56) found an ownership effect in neurotypical but not autistic adults. The findings suggest that individual differences in autistic traits in the neurotypical population do not impact the ownership effect, but a clinical diagnosis of autism might. We discuss how these findings can be explained by differences in psychological self-awareness in autism.

Suggested Citation

  • Marchella Smith & David Williams & Sophie Lind & Heather J Ferguson, 2023. "Revisiting the ownership effect in adults with and without autism," PLOS ONE, Public Library of Science, vol. 18(12), pages 1-18, December.
    • Handle: RePEc:plo:pone00:0293898
    DOI: 10.1371/journal.pone.0293898
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