Automatic and controlled processing and the Broad Autism Phenotype

Area of Science:

• Neuroscience
• Cognitive Psychology
• Developmental Psychology

Background:

• Limited research exists on verbal fluency in the Broad Autism Phenotype (BAP).
• Previous studies suggest BAP is associated with executive function weaknesses, but verbal fluency has not been thoroughly investigated.
• Controlled processing, a key executive function, has not been studied in BAP.

Purpose of the Study:

• To investigate controlled processing in verbal fluency tasks within the Broad Autism Phenotype (BAP).
• To examine differences in verbal fluency and controlled processing strategies between individuals with and without BAP.
• To explore the relationship between controlled processing and other cognitive abilities in both groups.

Main Methods:

• One hundred twenty-nine participants completed the Delis-Kaplan Executive Function System Verbal Fluency test (D-KEFS) and the Broad Autism Phenotype Questionnaire (BAPQ).
• Participants were divided into a BAP group (n=53) and a Non-BAP group (n=76).
• Statistical analyses included group comparisons, partial correlations, and regression analyses to assess verbal fluency, controlled processing, and cognitive predictors.

Main Results:

• The BAP group produced significantly fewer words in the 2nd 15-second interval of the verbal fluency test compared to the Non-BAP group.
• Regression analyses indicated that controlled processing skills were distinct from automatic processing skills in both groups.
• Controlled processing predicted Block Design scores in Non-BAP participants and Pragmatic Language scores on the BAPQ in BAP participants.

Conclusions:

• Results suggest that individuals with BAP have adequate automatic verbal processing but demonstrate a slower development of controlled processing strategies.
• The findings support the idea that controlled processing is a distinct cognitive skill that may be affected in BAP.
• Controlled processing may be crucial for tasks requiring the use of weaker lower-level skills, particularly in the context of BAP.