Development of Episodic Memory and Foresight in High-Functioning Preschoolers with ASD

Area of Science:

• Neurodevelopmental disorders
• Cognitive development
• Autism spectrum disorder (ASD) research

Background:

• Episodic memory and future thinking are crucial for daily functioning.
• Early identification of cognitive differences in autism spectrum disorder (ASD) is vital.
• Understanding the developmental trajectory of these skills in ASD is limited.

Purpose of the Study:

• To examine the early development of episodic memory and future thinking in preschoolers with ASD.
• To compare the performance of children with ASD and typically developing (TD) children on these cognitive tasks.
• To investigate the relationship between episodic memory and future thinking in young children with ASD.

Main Methods:

• Recruited 94 preschoolers with ASD and 94 TD preschoolers.
• Assessed episodic memory by requiring participants to recall newly acquired knowledge sources.
• Evaluated future thinking by having participants anticipate action timings for future events.

Main Results:

• Five-year-old children with ASD demonstrated similar source memory recall to TD children.
• Six-year-old children with ASD performed significantly worse than TD children in source memory recall.
• Children with ASD consistently failed to anticipate future action timings compared to TD peers.
• Source memory and future thinking were correlated in TD children but not in children with ASD.

Conclusions:

• Episodic memory and future thinking skills appear to be deficient in preschool-aged children with ASD.
• These cognitive functions may be unintegrated in children with ASD during the preschool years.
• The findings highlight potential developmental delays in key cognitive abilities within ASD during early childhood.