Item learning in cognitive skill training: effects of item difficulty

Area of Science:

• Cognitive Psychology
• Human Learning and Memory

Background:

• Skill acquisition research often examines factors influencing learning speed and efficiency.
• Understanding how item difficulty impacts different memory systems is crucial for optimizing training protocols.

Purpose of the Study:

• To investigate the influence of item difficulty on recognition memory and solution memory during skill learning.
• To compare these effects across different age groups (young and older adults).

Main Methods:

• Participants underwent extensive training on alphabet arithmetic problems with varying addend sizes (difficulty levels).
• Recognition memory was assessed using interpolated recognition tests.
• Solution memory was measured by participants' reports of retrieving solutions versus computing them.

Main Results:

• Recognition memory was acquired early and was not influenced by item difficulty.
• Solution memory was acquired later and was significantly affected by item difficulty, with easier items learned faster.
• Both young and older adults showed these patterns, though older adults exhibited overall lower solution learning.

Conclusions:

• The formation of problem-solution associations is an effortful process with limited processing resources.
• Item difficulty primarily impacts the learning of solution retrieval, not item recognition.
• Age-related differences in cognitive processing may affect the efficiency of solution learning.