%0 Journal Article %@ 2368-7959 %I JMIR Publications %V 6 %N 5 %P e11845 %T When All Else Fails, Listen to the Patient: A Viewpoint on the Use of Ecological Momentary Assessment in Clinical Trials %A Mofsen,Aaron M %A Rodebaugh,Thomas L %A Nicol,Ginger E %A Depp,Colin A %A Miller,J Philip %A Lenze,Eric J %+ Department of Psychiatry, University of California - San Diego, 9500 Gilman Drive, San Diego, CA, 92093, United States, 1 8588224251, cdepp@ucsd.edu %K ecological momentary assessment %K mental health %K controlled clinical trial %K psychiatry %K health technology %D 2019 %7 21.4.2019 %9 Viewpoint %J JMIR Ment Health %G English %X A major problem in mental health clinical trials, such as depression, is low assay sensitivity in primary outcome measures. This has contributed to clinical trial failures, resulting in the exodus of the pharmaceutical industry from the Central Nervous System space. This reduced assay sensitivity in psychiatry outcome measures stems from inappropriately broad measures, recall bias, and poor interrater reliability. Limitations in the ability of traditional measures to differentiate between the trait versus state-like nature of individual depressive symptoms also contributes to measurement error in clinical trials. In this viewpoint, we argue that ecological momentary assessment (EMA)—frequent, real time, in-the-moment assessments of outcomes, delivered via smartphone—can both overcome these psychometric challenges and reduce clinical trial failures by increasing assay sensitivity and minimizing recall and rater bias. Used in this manner, EMA has the potential to further our understanding of treatment response by allowing for the assessment of dynamic interactions between treatment and distinct symptom response. %M 31066701 %R 10.2196/11845 %U https://mental.jmir.org/2019/5/e11845/ %U https://doi.org/10.2196/11845 %U http://www.ncbi.nlm.nih.gov/pubmed/31066701