Do tidy or messy spaces help self-control and creativity?
A tidy room helped only low-self-control students persist longer at holding their breath, while a messy scene boosted creativity only for high-self-control students.
Source
Environmental Orderliness Affects Self-Control and Creative Thinking: The Moderating Effects of Trait Self-Control
Study at a glance
- Design
- Human experiment — Two 2 (orderly vs disorderly environment, randomised) x 2 (high vs low trait self-control, median split) between-subjects experiments: a real tidy/messy room with a breath-holding task, then tidy/messy desk pictures with the Alternative Uses Test
- N
- N=274 · Separate samples: 152 analysed in Experiment 1 (room manipulation, breath-holding) and 122 analysed in Experiment 2 (picture priming, AUT)
- Population
- Chinese college students (mostly women) pre-screened on the Brief Self-Control Scale
- Outcome
- Experiment 1: change in breath-holding time from before to after exposure; Experiment 2: rated creativity of uses for a tire (average score, number of highly creative ideas, top-2 score)
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What they did
Students first completed a trait self-control questionnaire and were split at the median into high and low groups. In Experiment 1, they held their breath twice, waited a minute in either a neatly arranged or a cluttered room, and held their breath twice more; improvement in holding time indexed state self-control. In Experiment 2, a new sample looked at and described a picture of a tidy or messy desk, then listed creative uses for a tire, which blind raters scored for creativity.
What they found
In Experiment 1, the tidy room produced more improvement in breath-holding overall, but the order-by-trait interaction was only marginal; the tidy-room advantage was clear for low-self-control students and absent for high-self-control students. In Experiment 2, the messy picture raised average creativity and top-2 creativity for high-self-control students, with no effect for low-self-control students, and no overall main effect of messiness. Mood and everyday tidiness habits did not differ across conditions.
The limits
What it doesn't show
The key moderation in Experiment 1 was only marginally significant and the effects were small, and splitting a continuous trait at the median discards information and inflates the risk of spurious subgroup effects. The two experiments used different manipulations (a real room versus a picture) and different outcomes, so they cannot be directly compared, and the authors acknowledge limited sample sizes and reliance on self-report for trait self-control. The proposed mechanism, 'available self-control resources', was not measured directly, and it rests on the resource (ego-depletion) model, which is itself debated.
Key terms
- Trait self-control
- A stable individual tendency to override impulses and regulate behaviour, measured here with the Brief Self-Control Scale.
- State self-control
- Self-control exerted in the moment on a specific task, here indexed by how much longer people could hold their breath after the manipulation.
- Moderator
- A variable that changes the strength or direction of the effect of another variable, shown statistically as an interaction.
- Alternative Uses Test (AUT)
- A divergent-thinking task in which people list as many unusual uses as they can for an everyday object.
- Median split
- Dividing participants into 'high' and 'low' groups at the middle score of a continuous measure.
- Manipulation check
- A measure confirming that participants perceived the experimental manipulation as intended, here ratings of how orderly the room or picture seemed.
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Quiz yourself
What was the dependent measure of state self-control in Experiment 1?
Common questions
Does this mean messy desks make everyone more creative?
No. In this study the messy picture did not raise creativity overall; it helped only people high in trait self-control, and did nothing for those low in it.
Why did low-self-control students improve more at breath-holding than high-self-control students?
The authors suggest high-self-control people may conserve their resources for possible future tasks, so they invested less in the breath-holding task, while low-self-control people were more sensitive to the tidy room.
Why measure self-control with breath-holding?
Holding your breath requires overriding the body's urge for air, so it is a simple behavioural measure of persistence, compared before and after the room exposure to control for baseline lung capacity.
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