A group-administered lag task as a measure of working memory

Area of Science:

• Cognitive Psychology
• Neuroscience
• Psychometric Evaluation

Background:

• The n-back task is a standard measure of working memory capacity.
• Individual administration of the n-back task is time-consuming.
• A group-administered version could increase efficiency in cognitive assessments.

Purpose of the Study:

• To evaluate the utility of a group-administered n-back task, termed the modified lag task (MLT).
• To establish the psychometric properties of the MLT.
• To assess the MLT's convergent validity with existing working memory measures.

Main Methods:

• Construction and administration of the modified lag task (MLT) in group settings.
• Performance analysis across varying lag conditions (difficulty levels).
• Comparison of MLT scores with established working memory tasks: operation-word span and automatic operation span tasks.

Main Results:

• The MLT demonstrated performance trends consistent with individually administered n-back tasks.
• Task performance significantly decreased as lag difficulty increased.
• MLT scores showed significant positive correlations with scores on both the operation-word span and automatic operation span tasks.

Conclusions:

• The modified lag task (MLT) is a valid and reliable measure of working memory in a group-administered format.
• The MLT offers a practical alternative for assessing working memory capacity efficiently.
• The findings support the MLT's utility for both research and clinical applications in cognitive assessment.