Differences and Relationships Between Sensory Profile and Repetitive Behavior in Autism

Area of Science:

• Neuroscience
• Developmental Psychology
• Behavioral Science

Background:

• Repetitive behaviors are common in Autism Spectrum Disorder (ASD), impacting social integration and causing distress.
• Sensory processing differences are frequently observed in individuals with ASD, potentially influencing behavior.
• Repetitive behaviors may serve as a regulatory mechanism for sensory stimulation in ASD.

Purpose of the Study:

• To investigate the relationship between sensory processing profiles and repetitive behaviors in individuals with Autism Spectrum Disorder (ASD).
• To identify differences in sensory processing and repetitive behaviors across different severity levels of ASD.

Main Methods:

• Utilized the Bodfish Repetitive Behavior Scale and Sensory Profile 2 for data collection.
• Assessed 48 students with ASD, aged 4 to 26 years.
• Analyzed differences and correlations between sensory processing patterns and repetitive behaviors.

Main Results:

• Significant differences in sensory processing and repetitive behaviors were found, particularly in students with Level 3 ASD.
• Level 3 students exhibited higher rates of self-injury, tactile/movement processing difficulties, and sensory registration issues (passive response, high perception threshold).
• Hyper-reactivity weakly predicted insistence on sameness; hypo-reactivity did not predict it.

Conclusions:

• The study found weak correlations between repetitive behaviors and sensory processing in ASD, which contradicts existing literature.
• Sensory processing disorders may not be the primary driver for all repetitive behaviors in ASD.
• Further research is needed to understand the complex interplay between sensory processing and behavior in ASD.