Health and Wellbeing through Work and Retirement Transitions in Mature Age: Understanding Pre—Post and Retrospective Measures of Change

The capacity to measure change is essential in examining successful adaptation to ageing. Few studies measuring change have compared findings using pre—post approaches (employing difference scores) with those from retrospective approaches (employing self-ratings). Where this has occurred, differences have been attributed either to ceiling and floor effects or to the operation of social comparison (Choi, 2002, 2003). Our study compared pre—post and retrospective measures of change in health, health behaviors, and wellbeing over periods of 1 and 3 years among retirees. Retrospective measures were found to be more positive than pre—post measures. This discrepancy was associated with floor and ceiling effects and with a robust self-image, but not with recency, social comparison, or social desirability response sets. Pre—post difference scores have limitations as indicators of change, particularly where ceiling effects operate. A retrospective perception of improvement, combined with deterioration in scores, may result from successful psychological adaptation as people grow older.