Age-dependent and coordinated shift in performance between implicit and explicit skill learning.

Area of Science:

• Cognitive Psychology
• Developmental Neuroscience
• Human Learning

Background:

• General sequence learning follows an inverted-U pattern, peaking in early adulthood.
• Implicitly learning event probabilities in sequences peaks before age 12 and declines thereafter.

Purpose of the Study:

• To test the hypothesis that cognitive control development around age 12 enhances explicit learning at the expense of implicit probability sensitivity.
• To investigate age-related changes in sequence learning strategies.

Main Methods:

• A sequence learning task with probabilistic sequences was administered to 288 participants across five age groups (11-39 years).
• The study replicated an implicit learning paradigm within an explicit task setting, guiding participants to identify repeating sequences.

Main Results:

• Explicit sequence pattern detection performance was consistent across all age groups.
• Explicit knowledge of sequence identity increased significantly around age 12, coinciding with the decline in implicit probability learning.

Conclusions:

• Developing cognitive control optimizes skill learning by balancing explicit strategy use and reduced sensitivity to raw event probabilities.
• Internal models enhance skill acquisition, compensating for decreased reliance on basic probability detection.