Does working memory still matter for expert soccer decisions?
Better working memory went with faster soccer decisions just as much in professional players as in amateurs and recreational players, so years of practice did not remove its influence.
Source
The role of working memory capacity in soccer tactical decision making at different levels of expertise
Study at a glance
- Design
- Cross-sectional — Three expertise groups (between-subject, not manipulated) completed two complex span tasks and a video tactical decision task with and without auditory distraction (the distraction condition was always second); moderation analysis tested expertise x WMC interactions.
- N
- 129 male players were tested (42 professional, 46 amateur, 41 recreational); two were excluded for incomplete tasks, so analyses used the remaining players.
- Population
- Adult male soccer players from Croatian and Bosnian professional, lower-league and recreational levels
- Outcome
- Speed (response time) and accuracy of choosing the better tactical option in soccer video clips, with and without auditory distraction; detection of own name in the ignored audio stream
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What they did
The researchers tested 129 male soccer players at three levels: professional, amateur and recreational. Each player watched short clips from real matches and chose which of two marked options (pass or shot) was best, once in quiet and once while a stream of spoken words played in the background that they had to ignore. Working memory capacity was measured with two complex span tasks (remembering letters while solving maths, and remembering grid locations while judging symmetry) and combined into one score.
What they found
Professionals decided faster and more accurately than the other two groups, for example averaging about 595 ms versus 705 ms in the quiet task. Higher working memory capacity predicted faster decisions in both tasks and more accurate decisions under distraction, but it did not predict accuracy in the quiet task. Crucially, the link between working memory and performance was the same at every expertise level, and Bayes factors favoured the no-interaction model (for example, 11.75 times more likely for response times). Own-name detection in the ignored audio did not depend on working memory or expertise.
The limits
What it doesn't show
The groups were not randomly assigned and differ in many ways besides practice, so the study cannot say practice itself causes the expertise advantage. The distraction task always came second, so order effects could mix with distraction effects. The professionals were national-league players rather than world-class elites, and the authors concede working memory might matter less in truly exceptional players. Only men were tested, and a lab keyboard task with two pre-marked options is much simpler than a real on-pitch decision.
Key terms
- Working memory capacity (WMC)
- How much information a person can hold and control in mind while doing another task, measured here with complex span tasks.
- Circumvention-of-limits hypothesis
- The idea that extensive deliberate practice lets experts bypass basic working memory limits by using domain-specific knowledge structures.
- Independent influence hypothesis
- The view that working memory capacity contributes to performance separately from practice and knowledge, even at high skill levels.
- Complex span task
- A test that alternates remembering items with a processing task (e.g., solving equations), scoring how many items are recalled in order.
- Moderation analysis
- A regression test of whether the effect of one variable (WMC) changes depending on another variable (expertise level).
- Bayes factor
- A ratio showing how much more likely the data are under one model than another, useful for gauging evidence for a null effect.
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Quiz yourself
What was the key finding about the expertise x working memory interaction?
Common questions
If professionals were better, why doesn't this support the 'practice is everything' view?
Practice-related expertise did help, but the question was whether it cancelled out working memory's role. Working memory predicted speed equally well at all levels, so both practice and working memory contributed independently.
Did working memory predict everything?
No. It predicted decision speed in both tasks and accuracy under distraction, but not accuracy in the quiet task.
Why use video clips instead of still photos?
The authors argued that dynamic, constantly changing input makes it harder to rely on stored knowledge and so is more likely to engage working memory, and it is closer to a real match.
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