New Scientist NL · Science

Impulse Control Develops Later Than Expected

Neuroscientists have discovered that impulse control continues to develop longer than previously assumed, even after the age of eighteen.

Unlike working memory, which is considered complete around the age of eighteen, impulse control continues to develop into young adulthood. This suggests a longer period of brain development for self-control.

Researchers from, among others, the Chinese Academy of Medical Sciences and Peking Union Medical College analyzed the performance of 33.622 Chinese young people (12-18 years old) on computer tests measuring working memory and impulse control. The results, published in Nature Mental Health, show that impulse control stabilizes later than working memory.

The 'Go/No-Go' test was used to measure impulse control, where participants had to respond to certain signals and ignore others. Working memory was tested with '1-Back/2-Back' exercises, which required temporarily storing and using information.

The study showed that the development of working memory was complete after the age of eighteen, while the development of impulse control was still ongoing. The precise end age for this development could not be determined.

The young adult stage is crucial for brain development, during which control over thoughts, actions, and emotions is learned, as well as social skills.

Mapping these age-related developmental differences can help in the early identification of behavioral and mental problems, which can lead to improved mental health care.

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