Typical versus delayed speech onset influences verbal reporting of autistic interests.

The study only describes how adults talked about their interests. It did not assign people to treatment, so it cannot show that speech history causes any change or that a therapy works. All autistic participants were adults who could speak and complete an interview, so it does not apply to minimally verbal autistic people or children. The autistic groups were not perfectly balanced for sex, and the sex analysis was insufficiently powered. Verbal ability, vocabulary, and education differed between groups, even though analyses tried to control for them. The interview was conducted orally. A written questionnaire might have reduced language differences and produced different results. Diagnosis was based on DSM-IV categories and clinical or ADI-R information, not DSM-5. Controls were recruited from personal and professional networks and had to dedicate more than 25% of their free time to an interest, so they were not a general population sample.

The supplied metadata lists non-U.S. government research support. No author conflict declaration is provided.

Do not conclude that delayed speech onset changes the interests themselves or reduces their benefit. The study found differences in how people described interests, while the topics, impact, and function of interests were largely similar across groups.