The spacing effect and metacognitive control.

Area of Science:

• Cognitive Psychology
• Educational Psychology

Background:

• The spacing effect demonstrates superior long-term retention with spaced learning compared to massed learning.
• Metacognitive control, specifically learner choice in restudy scheduling, was proposed as a moderator of the spacing effect.
• Prior research suggested the spacing effect diminishes if learners are forced to space material against their preference.

Purpose of the Study:

• To investigate whether metacognitive control moderates the spacing effect.
• To address potential item-selection confounds in previous research on metacognitive control and spacing.

Main Methods:

• Replication of the original experimental design that suggested metacognitive control as a moderator.
• Implementation of a more appropriate baseline to control for item-selection confounds.
• Comparison of the spacing effect when participants' restudy choices were honored versus violated.

Main Results:

• An item-selection confound was confirmed in the original paradigm.
• The spacing effect remained significant and consistent in size regardless of whether participants' restudy choices were respected or overridden.
• Metacognitive control did not moderate the spacing effect under these experimental conditions.

Conclusions:

• The spacing effect is robust and not moderated by metacognitive control when item-selection confounds are addressed.
• Learner choice in restudy scheduling does not appear to influence the effectiveness of spaced learning.
• Future research should carefully control for item-selection biases when examining moderators of the spacing effect.