Perceived versus actual autism knowledge in the general population

Background: In recent years, there has been a growing interest in assessing the general public's knowledge and awareness of Autism Spectrum Disorders (ASD). A variety of methods have been used to measure participants' ASD knowledge, including self-report of ASD knowledge and objective assessment of ASD knowledge. The goals of the current study are twofold: (1) To determine whether there is a relationship between participants' self-reported, perceived ASD knowledge and objectively-measured, actual ASD knowledge and (2) to examine the degree to which participants are aware of and can accurately monitor their own ASD knowledge. Method: Participants in the general population completed a subjective, self-report questionnaire on their perceived knowledge of ASD and an objective assessment measuring their actual knowledge of ASD. After completing the objective assessment, they estimated their raw score and percentile performance on the assessment. Results: Participants' perceived knowledge of ASD was not related to their actual knowledge of ASD. Participants least knowledgeable about ASD overestimated their performance, and participants most knowledgeable about ASD underestimated their performance. Conclusions: These results suggest that perceived and actual ASD knowledge are theoretically distinct constructs, such that self-reported ASD knowledge cannot serve as a proxy variable for actual ASD knowledge. Furthermore, individuals with low ASD knowledge are often not aware of their own ignorance, such that it is unlikely that they will independently seek additional knowledge or training in this area.