Participants used the Wechsler Adult Intelligence Scale (WAIS-III), which is a psychometric test that assesses intellectual ability through four subsets: verbal comprehension, perceptual organization, working memory, and processing speed. 

Intellectual ability in participants  

Participants used the Delis-Kaplan Executive Function System (D-KEFS), which is a set of nine verbal and non-verbal neuropsychological tests for assessing executive functioning in people of all ages. Several tests include verbal fluency, free sorting, free inquiry, color naming, visual scanning, etc. 

Executive functioning in participants

- Intellectual ability
- Executive functions

University of Illinois at Chicago

Current studies show that there are cognitive similarities and differences in intellectual and executive functioning between those living with Schizophrenia and Asperger's syndrome. 

Similarities and differences between Schizophrenia and Asperger's Syndrome

Marinopoulou, M., Lugnegård, T., Hallerbäck, M. U., Gillberg, C., & Billstedt, E. (2016). Asperger Syndrome and Schizophrenia: A Comparative Neuropsychological Study. Journal of autism and developmental disorders, 46(7), 2292–2304. https://doi.org/10.1007/s10803-016-2758-9

Asperger Syndrome and Schizophrenia: A Comparative Neuropsychological Study

From the present study, its results indicate that Schizophrenia and Asperger's (a form of Autism Spectrum Disorder) are more alike than previously thought and when examining diagnostic standards. Additionally, the results of this study calls for more widespread practice of neuropsychological assessment in those with Schizophrenia as it will provide beneficial information on one's strengths and weaknesses and therefore one can receive appropriate and effective treatment. 

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