Westerhof, G.J.

meaning intervention group depressive symptoms evaluation reminiscence program source erasmus university fi ve sources depression symptom depressive sentence completions participant effect university westerhof intervention group signi improvement completion sentence comparison group ficant erasmu bohlmeijer downloaded difference comparison study score relation signi ficant differences person improvement group change article research result dittmann-kohli activity netherland question number contrast signi ficant interaction signi ficant difference reminiscence program journal pilot reker search story interaction table answer questionnaire relationship point survey mastery sentence completion questionnaire session development representative survey nijmegen tertile review birren therapy life span within-subjects contrasts tertile groups theme purpose haight regard variable theory