Effects May Both Increase or Decrease in the Long Term: A Statistical Illustration
Perspectives on Psychological Science
Published online on July 30, 2026
Abstract
Perspectives on Psychological Science, Ahead of Print.
It has been argued that small effect sizes observed at a single instance should not be dismissed because they can often accumulate in the long term. This follows a classic argument by Abelson (1985). However, it has also been argued that such long-term ...
It has been argued that small effect sizes observed at a single instance should not be dismissed because they can often accumulate in the long term. This follows a classic argument by Abelson (1985). However, it has also been argued that such long-term ...