Task switching hurts memory in adults but not in children

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Neuroscience

Background:

• Task switching negatively impacts cognitive performance and subsequent memory recall.
• Previous research indicates memory switch costs are present but can diminish over time.

Purpose of the Study:

• To investigate developmental differences in memory switch costs between children and young adults.
• To explore how task switching affects memory encoding in different age groups.

Main Methods:

• 240 participants (children 7-13, adults 19-31) performed alternating categorization tasks (size, animacy) on images.
• Incidental recognition memory was tested immediately and after one week for stimuli from switch and repeat trials.

Main Results:

• Both children and adults exhibited performance costs associated with task switching.
• Adults showed memory switch costs in the immediate test, but these vanished by the one-week follow-up.
• Children did not display memory switch costs in either memory test.

Conclusions:

• Children's memory encoding appears less affected by task switching compared to adults.
• Developmental differences in cognitive control and memory encoding strategies may explain the absence of memory switch costs in children.