Why can easier practice feel more effective than it is?
People rated blocked object-colour study as better even when interleaving improved the final test; judgments tracked immediate performance more closely than later retention.
Source
Why do people overestimate the effectiveness of blocked learning?
Study at a glance
- Design
- Human experiment — Three within-participant experiments manipulating category order
- N
- Samples of 60, 77 and 85 across three experiments
- Population
- Adults ages 18–35 recruited online or through a university course
- Outcome
- Colour-reproduction error and judgments of learning
- Comparison
- Blocked versus interleaved colour categories; a third experiment blocked object categories
- Test delay
- Immediate tests after sequences and final tests within the same session; no multi-day follow-up
Structured fields used in claim comparison tables when every cited study has a complete layer.
Inspect source passages
Why can easier practice feel more effective than it is?
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
Who participated and how large was the analysed sample?
As preregistered (https://osf.io/ket4p?view_only=2edb4b71379a4250a0a1103227970ec3), we collected a sample of 60 participants online on the platform Prolific.
What was the main finding?
Whilst blocked learning led to poorer performance in the final test, it boosted performance in the immediate test.
What they did
Three experiments used object-colour associations and judgments of learning. Samples were 60, 77, and 85 participants aged 18–35. The first compared colour-category blocking with interleaving on an end-of-session colour-reproduction test. The second also measured immediate recall after each sequence. The third instead blocked object categories, testing whether the judgment bias persisted when blocking no longer improved immediate performance.
What they found
In the first two experiments, interleaving colour categories improved final recall accuracy, while participants gave higher learning judgments to blocked study. In the second, blocked study improved immediate recall, and judgments followed that immediate advantage. In the third, blocking object categories did not reliably change immediate performance, final performance, or judgments. The findings support an immediate-performance explanation of the bias rather than habit alone.
The limits
What it doesn't show
These were short, within-session object-colour tasks, not school examinations or retention over weeks. Changing from colour categories to object categories changed the manipulation; the null third experiment is not a failure to replicate an identical intervention. The work does not prove that difficult practice always helps or that all learners misjudge every study technique.
Key terms
- Retention interval
- The time between the last learning opportunity and the outcome test.
- Comparison condition
- The alternative study activity or exposure against which a result is assessed.
- Generalisation
- Whether a result applies to other populations, materials, settings or outcomes.
Flashcards
0 of 6 answers reviewed
Research intelligence for this paper
See its role on concept claims, tensions it is part of, placement history, and related discoveries.
Quiz yourself
Which comparison was used in this study?
Common questions
Can easier practice give a misleading sense of learning?
Yes in these object-colour experiments: judgments favoured the format that helped immediately, even when later performance favoured interleaving.
Was the delayed test weeks later?
No. It was an end-of-session test, so this does not establish long-term classroom retention.
More on Learning