Autistic traits and attention to speech: Evidence from typically developing individuals

Area of Science:

• Cognitive psychology
• Neurodevelopmental disorders

Background:

• Individuals with autism spectrum disorder (ASD) exhibit a preference for non-speech over speech stimuli.
• Autistic traits in typically developing individuals can mimic behaviors seen in ASD.
• The role of autistic traits in auditory stimulus preference remains unclear.

Purpose of the Study:

• To investigate if non-speech sound preference is exclusive to diagnosed individuals with ASD.
• To experimentally test implicit auditory preferences in relation to autistic traits.
• To determine if autistic traits influence performance on a serial recall task with auditory distractors.

Main Methods:

• A serial recall task was employed with typically developing individuals.
• Auditory stimuli (speech and non-speech sounds) were presented during task performance.
• Error rates during different sound conditions (speech, non-speech, no sound) were analyzed.
• Autism Quotient (AQ) scores were correlated with task performance measures.

Main Results:

• The serial order effect was replicated, confirming speech sounds are more disruptive than non-speech sounds.
• No significant association was found between autism quotient scores and non-speech sound preference.
• Speech sounds significantly impaired serial recall performance compared to non-speech sounds.

Conclusions:

• The study did not find evidence linking autistic traits to a non-speech sound preference in a serial recall task.
• The disruptive effect of speech sounds may represent a learned behavioral response rather than an inherent preference.
• Further research is needed to understand the nuances of auditory processing in relation to autistic traits.