Need for Cognition is associated with a preference for higher task load in effort discounting

Area of Science:

• Cognitive psychology
• Decision-making research
• Individual differences in motivation

Background:

• Goal-setting involves balancing subjective value (SV) against effort, a key area in psychological research.
• Existing Cognitive Effort Discounting Paradigms assume an inverse relationship between task difficulty and SV, failing to capture individual effort perception differences.
• Traits like Need for Cognition influence how individuals perceive and value effortful cognitive tasks, necessitating a more nuanced approach.

Purpose of the Study:

• To introduce and validate the Cognitive and Affective Discounting (CAD) Paradigm, an adaptation of the Cognitive Effort Discounting Paradigm.
• To quantify subjective values (SVs) of cognitive tasks without assuming a preference for easier tasks.
• To investigate the influence of individual traits, such as Need for Cognition, on effort perception and task SVs.

Main Methods:

• Replication of Westbrook et al. (2013) using the adapted Cognitive and Affective Discounting (CAD) Paradigm with 116 participants.
• Assessment of subjective values (SVs) for varying levels of cognitive task difficulty, allowing for non-linear relationships.
• Measurement of individual Need for Cognition scores and analysis of their impact on SVs and effort perception.

Main Results:

• Many participants preferred more difficult cognitive tasks, challenging the assumption of an inverse difficulty-SV relationship.
• Task accuracy and a declining logistic contrast of n-back levels were significant predictors of SV variance.
• Higher Need for Cognition scores were associated with perceiving higher n-back levels as less effortful and less aversive.

Conclusions:

• The Cognitive and Affective Discounting (CAD) Paradigm effectively assesses task preferences independent of assumed objective difficulty.
• Individual differences, particularly Need for Cognition, significantly modulate the perception of effort and subjective value in cognitive tasks.
• The findings highlight the importance of considering individual traits in understanding effort-based decision-making.