Inconsistent flanker congruency effects across stimulus types and age groups: A cautionary tale.

Area of Science:

• Cognitive Psychology
• Developmental Psychology

Background:

• The flanker task is a widely used measure of selective attention and response competition.
• Adapting cognitive tasks for different populations or contexts often involves methodological changes that lack empirical comparison.

Purpose of the Study:

• To investigate how typical methodological changes in flanker tasks differentially elicit congruency effects across age groups.
• To compare the performance of direction and color flanker tasks in young children, older children, and adults.

Main Methods:

• Two flanker tasks were compared: one using direction stimuli on a laptop and another using color stimuli on a tablet.
• Participants included young children (2-7 years), older children (6-10 years), and adults (19-23 years).
• A modified measure, signed residual time, was developed to account for correctness and reaction time, reducing trial exclusion.

Main Results:

• Young children showed congruency effects in both direction and color tasks longitudinally.
• Initial comparisons indicated no difference in congruency effects across tasks, but high exclusion rates.
• With a larger sample and the modified measure, no significant differences in congruency effects were found across tasks.
• However, when tasks were administered within the same session, congruency effects were observed in the direction task but not the color task in older children and young adults.

Conclusions:

• Methodological adaptations in flanker tasks can lead to differential performance across age groups.
• Researchers should exercise caution when modifying cognitive tasks, as adaptations may not yield comparable results in different samples.
• The findings highlight the importance of empirical validation when adapting cognitive measures for diverse populations.