Fig. 2: Results from studies assessing the Zeigarnik effect.
From: Interruption, recall and resumption: a meta-analysis of the Zeigarnik and Ovsiankina effects

Each point represents the ratio of the averaged mean recall of interrupted tasks to completed tasks from individual studies. The size of each point corresponds to the study’s sample size. A dotted line at a value of 1.0 serves as a reference, indicating an equal level of recall between interrupted and completed tasks. Points further to the right than the line validate the Zeigarnik effect, whereas points further to the left signify its inverse.