"Why do they do it?": The short-story task for measuring fiction-based mentalizing in autistic and non-autistic individuals.

Researchers tested a new way to measure 'theory of mind' - the ability to understand what others are thinking and feeling. Adults with and without autism read a short story and answered questions about the characters' thoughts. Autistic adults generally scored lower, but the test showed differences within both groups. People who read more books and had more education performed better, regardless of whether they were autistic.

This study validated the short-story task (SST) as a measure of mentalizing ability in adults. Sixty-four participants (32 autistic, 32 non-autistic) read Ernest Hemingway's 'The End of Something' and answered questions about characters' mental states. Results showed autistic participants scored in the lower third of the distribution compared to non-autistic participants. The task effectively discriminated between groups and showed variation within both populations.

Performance was predicted by reading habits, education level, and autism status. The SST appears promising for measuring mentalizing differences both between autistic and non-autistic individuals and among autistic adults themselves.

The SST offers a nuanced assessment tool that captures individual differences in mentalizing within autistic populations. Results suggest reading exposure and education may support social cognitive development, informing intervention approaches that incorporate literacy-based strategies for improving theory of mind skills.

Small sample size (N=64 total). Single story used may limit generalizability. No information provided about participant characteristics beyond autism status. Study design type not specified, limiting methodological evaluation.

This study aimed to validate the short-story-task (SST) based on Dodell-Feder et al. as an instrument to quantify the ability of mentalizing and to differentiate between non-autistic adults and autistic adults, who may have acquired rules to interpret the actions of non-autistic individuals. Autistic (N = 32) and non-autistic (N = 32) adult participants were asked to read "The End of Something" by Ernest Hemingway and to answer implicit and explicit mentalizing questions, and comprehension questions. Furthermore, verbal and nonverbal IQ was measured and participants were asked how much fiction they read each month. Mentalizing performance was normally distributed for autistic and non-autistic participants with autistic participants scoring in the lower third of the distribution.

ROC (receiver operator curve) analysis revealed the task to be an excellent discriminator between autistic and non-autistic participants. A linear regression analysis identified number of books read, years of education and group as significant predictors. Overall, the SST is a promising measure of mentalizing. On the one hand, it differentiates among non-autistic individuals and on the other hand it is sensitive towards performance differences in mentalizing among autistic adults.

Implications for interventions are discussed.