How much can a creativity course actually raise creativity?
The most useful benchmark comes from a meta-analysis pooling 332 effect sizes across many studies of adult creativity enhancement. On average, people in enhancement conditions scored about half a standard deviation higher than controls—a moderate effect, meaning the typical participant in a creativity program was more creative than roughly 70% of people who did not get the program [1]. That is a real, measurable shift, not a marginal one.
The same analysis found that the kind of method matters. Complex training courses, meditation, and cultural exposure were the most effective, each landing around a 0.66 effect size, while cognitive-manipulation drugs were the least effective and not reliably better than doing nothing [1]. Two design details also mattered: figural (image- and drawing-based) methods outperformed other training materials, and exercises aimed at convergent thinking—narrowing toward one correct answer—worked better than those targeting divergent thinking, the free-flowing generation of many ideas [1]. That last point may surprise people who assume brainstorming-style exercises are the gold standard.
Why do some methods work better than others?
The pattern across methods hints that creativity responds to structured, sustained practice rather than quick tricks. Complex courses combine instruction, practice, and feedback over time, and they topped the list [1]. Meditation and cultural exposure likewise involve repeated, immersive engagement rather than a single exercise. By contrast, a pharmacological shortcut produced essentially nothing [1], which fits the idea that creativity is a skill built through practice rather than a switch that can be flipped.
A separate four-year study of 350 teachers supports the value of sustained, structured development. Teachers who went through an innovative training and support model shifted toward more innovative problem-solving, greater openness to change, and a more holistic perspective rather than sticking to routines, and the program also improved teamwork and collaboration [2]. Because this study looked at one specific program without a comparison group reported in the summary, it is best read as an example of what a well-designed, long-term training model can look like rather than proof that any training will do the same.
Does taking a break beat formal training?
The direct comparison the question asks for has not been made in the evidence here. The meta-analysis clustered studies into twelve enhancement methods but did not set incubation against training [1], and the teacher-training study likewise made no such comparison [2]. Incubation does appear in discussions of the creative process—one account places it among the core elements of how creative adults work, alongside attitudes and other stages [4]—but that is a description of the process, not a test of whether a deliberate break outperforms a course.
So the fair reading is that training has the stronger evidence behind it, while incubation is a plausible and widely discussed part of creative work whose comparative value is still untested in these studies. If you are choosing how to spend your time, a structured program has the better track record; if you are stuck mid-problem, stepping away is a reasonable move that the evidence neither confirms nor rules out as superior.
Can older adults still gain from creativity training?
Preliminary results from a creativity training study in older adults suggest there may be plasticity and modifiability in this group, much as there is in intellectual functioning [3]. In plain terms, creativity may not be fixed with age—older adults appear able to improve with training. This is early-stage evidence described as preliminary, so it should be treated as encouraging rather than settled, but it extends the general finding that creativity is trainable to a population that is sometimes assumed to be past the point of change.
Sources used in this answer
Creativity enhancement methods for adults: A meta-analysis.
Across 332 effect sizes, adult creativity can be enhanced with a moderate average effect (Hedges' g = 0.53), with complex training courses, meditation, and cultural exposure most effective and cognitive-manipulation drugs least effective; figural methods and convergent-thinking targets performed better.
Enhancing Teachers’ Creativity with an Innovative Training Model and Knowledge Management
A four-year innovative teacher training and support model shifted 350 teachers toward more innovative problem-solving, openness to change, and holistic thinking, and improved teamwork and collaboration.
Creativity and successful aging
Preliminary results from a creativity training study suggest there may be plasticity and modifiability in older adults' creativity.
The five core attitudes, seven I's, and general concepts of the creative process
Creativity training programs and the creative process in productive adults involve elements such as incubation, described as one of the 'I's of the creative process.