On the relationship between response selection and response inhibition: An individual differences approach

Area of Science:

• Cognitive Neuroscience
• Psychology

Background:

• Executive functions, including response selection and inhibition, are crucial for goal-directed behavior.
• The relationship between response selection and response inhibition—whether they share resources or are distinct—remains unclear.

Purpose of the Study:

• To investigate whether response selection and response inhibition are separable cognitive processes.
• To examine the relationship between performance across various tasks measuring these executive functions.

Main Methods:

• An individual differences approach was employed.
• Seven cognitive paradigms were used: stop-signal, go-no-go, Stroop, flanker, single-response selection, psychological refractory period, and attentional blink tasks.
• Confirmatory factor analysis was conducted to assess the structure of cognitive operations.

Main Results:

• Confirmatory factor analysis supported a two-factor model.
• Performance on stop-signal and go-no-go tasks was associated with response inhibition.
• Performance on the psychological refractory period, Stroop, single-response selection, and attentional blink tasks was associated with response selection.

Conclusions:

• Response selection and response inhibition are distinct cognitive operations.
• These findings support a model where separable processes underlie executive control.
• Understanding these distinct functions is key to comprehending flexible and goal-directed behavior.