Part-task practice reduces cognitive load for absolute novices during initial skill acquisition.¶

Claim · All claims
Evidence · 1 study · causal r? · q3 · n=unspecified

For learners with very low prior knowledge, the complexity of a whole task can exceed working memory capacity, making isolated practice of critical sub-skills beneficial before integration.

Subclaims¶

q3 i? Isolating interactive elements of a complex task reduces intrinsic cognitive load for novices. → Pollock et al. 2002

Evidence¶

Primary evidence link: https://doi.org/10.1016/S0959-4752(01)00016-0

Pollock et al. 2002¶

Pollock, E., Chandler, P., & Sweller, J. (2002). Assimilating complex information. Learning and Instruction, 12(1), 61–86. https://doi.org/10.1016/S0959-4752(01)00016-0

q3 · peer-reviewed experiment · i? · no source text available to check; the entry prints no effect size · n=unspecified · causal · r?

The researchers found that for complex tasks with high element interactivity, novices performed better when initially presented with isolated parts of the task before being required to perform the whole integrated task.

Discussion¶

This finding qualifies the whole-task approach, suggesting that part-task practice is a necessary precursor or scaffold when the "whole" is too complex for the learner's current expertise.

Learner Variables¶

• Working Memory — outcome: instruction changes it

Related Claims¶

• Chicago classrooms with high-quality authentic intellectual assignments showed greater one-year ITBS gains than classrooms with low-quality assignments — the general claim this finding bears on, with the studies behind it

• In one experiment with 256 undergraduates, computer-based lesson versions that included practice produced significantly higher posttest scores than versions without practice — the general claim this finding bears on, with the studies behind it

• Minimal guidance is less effective for novices than explicit instruction — the general claim this finding bears on, with the studies behind it

• Pretraining learners on a system's key parts and terms before the main lesson improved knowledge and real-world transfer in one VR experiment, and is reported second-hand to improve learning in multimedia studies — the general claim this finding bears on, with the studies behind it

• A training-design argument, not tested by any study recorded here, holds that practising whole complex tasks improves transfer of complex skills
• Cognitive Load Management — related
• Cognitive Overload Degrades Learning — a broader claim this one bears on
• Skill develops through engaging in the target activity itself, not through mechanistic drill of isolated components — reports the opposite
• Four interrelated components are essential in blueprints for complex learning — a broader claim this one bears on
• For novice learners of complex information, the isolated-interacting elements instructional method produces superior learning compared with conventional instruction presenting all interacting information throughout — a narrower finding that bears on this claim
• Real-life complex tasks carry high intrinsic cognitive load, requiring new load-management methods — related
• Pretraining principle: pre-lessons on names, locations, and characteristics of key components improve transfer — related
• Current cognitive load measures cannot detect overload because the critical level indicating overload is unknown — related
• High task variability can overload working memory and reduce learning efficiency in some cases — related
• CLT-based instructional design is applied to very high element interactivity material (per Pollock, Chandler, & Sweller) — related