Degree of momentary PA persistence as a function of treatment response, placebo/imipramine and healthy control treatment status.

<p>Bars represent the association between PA at (<i>t-1</i>) and PA at (<i>t</i>) (level of momentary transfer of positive affect (PA) from (<i>t-1</i>) to (<i>t</i>) approximately 90 minutes, or level of PA persistence), stratified by treatment response and placebo/imipramine subgroups. Error bars represent one standard error of the mean.