From time to time I scan EurekAlert! which publishes easy-to-read blurbs on new research out of academia. They recently noted a University of Calgary study on procrastination, which I found interesting:
"Essentially, procrastinators have less confidence in themselves, less expectancy that they can actually complete a task," Steel says. "Perfectionism is not the culprit. In fact, perfectionists actually procrastinate less, but they worry about it more."
Other predictors of procrastination include: task aversiveness, impulsiveness, distractibility, and how much a person is motivated to achieve. Not all delays can be considered procrastination; the key is that a person must believe it would be better to start working on given tasks immediately, but still not start.