Shifting between mental sets: An individual differences approach to commonalities and differences of task switching...

Area of Science:

• Cognitive Psychology
• Neuroscience
• Individual Differences

Background:

• Task-switch paradigms are widely used to study mental set shifting.
• The unitary nature of shifting ability versus distinct facets remains unclear.

Purpose of the Study:

• To investigate whether different task-switch paradigms measure a unitary shifting ability or distinct components.
• To assess five proposed components of mental set shifting: judgments, stimulus dimensions, stimulus-response mappings, response sets, and stimulus sets.

Main Methods:

• Administered 20 task pairs to 119 young adults.
• Utilized latent factor modeling to analyze the proposed components of mental set shifting.

Main Results:

• A model with 5 separate, correlated factors best fit the data.
• Stimulus-response mapping shifting and response set shifting were most related to other factors and a general shifting factor.
• Shifting between judgments and stimulus dimensions required separate factors, not fully explained by a general shifting factor.
• Shifting between stimulus sets was largely independent of other shifting components, except for mapping shifting.

Conclusions:

• Tasks assessing stimulus-response mapping shifting are most suitable for measuring general executive shifting ability.
• Shifting between stimulus sets, as seen in tests like the Trail Making Test, may primarily reflect visual attention shifts, not executive shifting ability.