What ethical issue did Baron-Cohen encounter in his study regarding the AS/HFA group?

In Baron-Cohen's study involving the Autism Spectrum/High Functioning Autism (AS/HFA) group, the ethical issue related to participants potentially experiencing distress due to the challenging nature of the tests administered. Individuals with AS/HFA may have faced emotional discomfort as a result of the cognitive tasks that were designed to assess their abilities. This concern aligns with ethical standards in psychological research that prioritize the well-being of participants, ensuring they are not subjected to undue stress or harm during the course of the study. Recognizing this aspect highlights the importance of considering the psychological state of participants, especially those from vulnerable populations, to uphold ethical standards in research methodology.