Ecological Momentary Assessment as a Measure of Intervention Change: Evaluation in 4 Digital Mental Health Trials
October 17, 2023 Christian A. Webb, Lori M. Hilt, Caroline M. Swords et al. 1 citation preprint
Ecological momentary assessment (EMA) measures of rumination are only modestly correlated with conventional self-report measures, especially for change over time, partly due to lower reliability of EMA. Changes in rumination were larger for conventional self-report than EMA. Both types of measures accounted for unique variance in depressive symptom improvement, showing incremental predictive validity. The findings suggest that EMA and conventional self-report provide distinct, clinically meaningful information. Researchers using EMA should consider psychometric properties and the precise construct they intend to capture.