Individual differences in switching and inhibition predict perspective-taking across the lifespan

Area of Science:

• Cognitive psychology
• Developmental psychology
• Linguistics

Background:

• Previous research on executive functions (EF) and perspective-taking primarily studied inhibition and working memory in young adults or clinical groups.
• Limited attention has been given to more complex EF capacities, such as attentional switching, and their developmental trajectory in relation to perspective-taking across the lifespan.

Purpose of the Study:

• To investigate the relationship between individual differences in inhibition and attentional switching and perspective-taking abilities in healthy adults across a wide age range (17-84).
• To examine how age influences perspective-taking performance and its reliance on different executive functions.

Main Methods:

• Assessed individual differences in inhibition and attentional switching in healthy adults aged 17-84.
• Utilized a perspective-taking task where participants identified targets for a listener, considering common or privileged ground with size-contrasting competitors.
• Analyzed how age and executive function measures interacted to predict perspective-taking performance.

Main Results:

• Perspective-taking performance showed age-related modifications, with differences across conditions decreasing with age.
• An interaction between perspective-taking and executive functions was observed.
• Youngest adults' perspective-taking was best predicted by their inhibitory control, while oldest adults' performance was best predicted by their attentional switching abilities.

Conclusions:

• Perspective-taking is a multifaceted cognitive ability that relies on various executive functions.
• The specific executive functions supporting perspective-taking shift across the adult lifespan, with inhibition being crucial for younger adults and attentional switching for older adults.