How do task characteristics affect learning and performance? The roles of variably mapped and dynamic tasks

Area of Science:

• Cognitive Psychology
• Human-Computer Interaction
• Learning Sciences

Background:

• Individual differences in performance have been studied for over a century, primarily focusing on practice or cognitive resources.
• The predictive power of practice and cognitive resources varies significantly across different tasks.
• Previous research has not adequately examined how specific task characteristics moderate the relationship between practice, cognitive resources, and performance in complex tasks.

Purpose of the Study:

• To investigate the impact of task characteristics on learning and performance in a complex task.
• To test theoretical moderators of the relationship between practice, cognitive resources, and performance.
• To determine how manipulating specific task characteristics influences learning and performance outcomes.

Main Methods:

• Two experiments were conducted using a custom-designed game, similar to a tower defense videogame, allowing independent manipulation of key task characteristics.
• Experiment 1 manipulated stimulus-response mapping consistency (consistent vs. variable mapping).
• Experiment 2 manipulated task dynamics (static vs. dynamic conditions) and cognitive load.

Main Results:

• Variable mapping conditions in Experiment 1 significantly reduced participants' accuracy and efficiency.
• Dynamic conditions in Experiment 2 hindered learning and performance accuracy, particularly when participants experienced high cognitive load.
• Task characteristics were found to alter the relative importance of cognitive resources and practice in predicting learning and performance.

Conclusions:

• Task characteristics play a crucial role in moderating the effects of cognitive resources and practice on learning and performance.
• Understanding task characteristics is essential for optimizing learning and performance in complex environments.
• Future research should consider task design as a key factor when investigating individual differences in performance.