Effect of prior practice on the stimulus-response compatibility effect in a mixed mapping environment

Area of Science:

• Cognitive Psychology
• Human-Computer Interaction
• Neuroscience

Background:

• The stimulus-response compatibility (SRC) effect demonstrates improved performance with compatible stimulus-response mappings compared to incompatible ones.
• In mixed-mapping tasks, where both compatible and incompatible trials are presented, the SRC effect is often diminished or reversed.
• Understanding how extensive practice influences response selection in these complex environments is crucial for designing effective training protocols.

Purpose of the Study:

• To investigate the impact of 1,600 practice trials on the response selection process within mixed-mapping environments.
• To determine if different practice conditions (mixed, pure compatible, pure incompatible) alter the elimination or reversal of the SRC effect in subsequent mixed tasks.

Main Methods:

• Participants were divided into three groups, each undergoing a distinct practice regimen: mixed mapping, pure compatible mapping, or pure incompatible mapping.
• Following the practice phase, all participants completed an experimental session featuring a mixture of compatible and incompatible trials.
• Behavioral data, including reaction times and error rates, were analyzed, alongside sequential analyses of trial performance.

Main Results:

• The SRC effect was consistently eliminated in the experimental mixed-mapping session, irrespective of the prior practice condition.
• Despite the absence of an SRC effect, reaction time distributions and sequential analyses revealed significant modulation based on the practice condition.
• This suggests that while the primary response selection route's suppression need remained, practice influenced other interacting pathways.

Conclusions:

• Extensive practice does not abolish the fundamental need to suppress direct response selection in mixed-mapping tasks.
• Learned associations from practice can establish new response pathways that interact with pre-existing ones, influencing task performance dynamics.
• These findings have implications for understanding skill acquisition and optimizing training strategies in tasks requiring flexible stimulus-response mapping.