Procrastinators are pretty impulsive too!
A new study suggests that procrastination and impulsivity are genetically linked, suggesting that the two traits stem from similar evolutionary origins.
The research indicates that the traits are related to our ability to successfully pursue and juggle goals.
"Everyone procrastinates at least sometimes, but we wanted to explore why some people procrastinate more than others and why procrastinators seem more likely to make rash actions and act without thinking," psychological scientist and study author Daniel Gustavson of the University of Colorado Boulder said.
"Answering why that's the case would give us some interesting insights into what procrastination is, why it occurs, and how to minimize it," he said.
From an evolutionary standpoint, impulsivity makes sense: Our ancestors should have been inclined to seek immediate rewards when the next day was uncertain.
Procrastination, on the other hand, may have emerged more recently in human history. In the modern world, we have many distinct goals far in the future that we need to prepare for - when we're impulsive and easily distracted from those long-term goals, we often procrastinate.
Thinking about the two traits in that context, it seems logical that people who are perpetual procrastinators would also be highly impulsive.
Many studies have observed this positive relationship, but it is unclear what cognitive, biological, and environmental influences are responsible for it.
The most effective way to understand why these traits are correlated is to study human twins. Identical twins — who share 100 percent of their genes — tend to show greater similarities in behavior than fraternal twins, who only share 50 percent of their genes (just like any other siblings).
Researchers take advantage of this genetic discrepancy to figure out the relative importance of genetic and environmental influences on particular behaviors, like procrastination and impulsivity.
Gustavson and colleagues found that procrastination is indeed heritable, just like impulsivity. Not only that, there seems to be a complete genetic overlap between procrastination and impulsivity — that is, there are no genetic influences that are unique to either trait alone.
That finding suggests that, genetically speaking, procrastination is an evolutionary byproduct of impulsivity — one that likely manifests itself more in the modern world than in the world of our ancestors.
The study is published in Psychological Science, a journal of the Association for Psychological Science.
(Posted on 08-04-2014)
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