Autism is not associated with poor or enhanced performance on the Iowa Gambling Task: A Meta-Analysis

Area of Science:

• Neuroscience
• Psychology
• Behavioral Science

Background:

• Autism Spectrum Disorder (ASD) is associated with self-reported difficulties in routine decision-making.
• There is ongoing debate regarding whether individuals with ASD exhibit impaired or enhanced decision performance compared to controls.

Purpose of the Study:

• To investigate decision performance and choice switching in high-functioning individuals with Autism Spectrum Disorder (ASD) using the Iowa Gambling Task (IGT).
• To resolve controversy regarding decision-making abilities in ASD by conducting a meta-analysis of relevant studies.

Main Methods:

• A meta-analysis was performed on 14 studies.
• Included 433 participants with ASD and 500 typically developing controls.
• Examined decision performance (selecting advantageous options) and choice switching on the IGT.

Main Results:

• Overall IGT performance showed no significant difference between ASD and control groups (d = 0.04).
• A slight disadvantage was observed for the ASD group in the initial trials (d = -0.16).
• A non-significant trend towards increased choice switching was noted in the ASD group (d = -0.37).

Conclusions:

• Decision performance on the Iowa Gambling Task is comparable between individuals with Autism Spectrum Disorder and controls.
• Potential differences in decision-making strategies, rather than overall performance, may distinguish the groups.
• Further research is warranted to explore choice switching behaviors in ASD decision-making.