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Working memory and processing speed as predictors of general fluid intelligence in adults with high functioning
1Department of Special Education, Umm Al-Qura University, Makkah, Saudi Arabia.
Applied Neuropsychology. Adult
|March 5, 2026
Summary
Working memory and processing speed significantly predict general fluid intelligence (Gf) in adults with autism spectrum disorder (ASD). These cognitive functions account for 64.1% of the variance in Gf for this population.
Area of Science:
- Neuroscience
- Psychology
- Autism Spectrum Disorder Research
Background:
- Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by social communication deficits and restricted, repetitive behaviors.
- Cognitive functioning, particularly executive functions like working memory and processing speed, can vary significantly in individuals with ASD.
- Understanding the relationship between specific cognitive abilities and general fluid intelligence (Gf) is crucial for targeted interventions.
Purpose of the Study:
- To investigate the predictive relationship between working memory capacity and processing speed on general fluid intelligence (Gf).
- To determine the proportion of variance in Gf explained by these two cognitive functions in adults diagnosed with ASD.
- To contribute to a better understanding of cognitive profiles within the adult ASD population.
Main Methods:
- A cohort of 107 adults diagnosed with Autism Spectrum Disorder (ASD) based on DSM-5 criteria participated.
- Pearson correlation and moderated hierarchical multiple regression analyses were employed.
- Working memory capacity and processing speed were assessed as independent variables predicting general fluid intelligence (Gf).
Main Results:
- The combined predictive power of working memory capacity and processing speed on general fluid intelligence (Gf) was significant.
- A coefficient of multiple regression (R) of 0.667 was observed.
- The combination of working memory capacity and processing speed accounted for 64.1% of the total variance in general Gf.
Conclusions:
- Working memory capacity and processing speed are significant predictors of general fluid intelligence in adults with high-functioning autism.
- These cognitive functions play a substantial role in the general fluid intelligence of individuals with ASD.
- Findings highlight the importance of assessing and potentially targeting working memory and processing speed for cognitive enhancement in adults with ASD.
Keywords:
Adults with high functioning autismgeneral fluid intelligenceprocessing speedstructural equation modeling approachworking memoryMore Related Videos
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