Ecological Momentary Assessment

A research and clinical method that involves repeatedly sampling people's behaviors, experiences, and physiological states in real time within their natural environments. EMA typically uses smartphone prompts to ask users to report their current thoughts, feelings, activities, and context at random or scheduled intervals throughout the day. In mental health, EMA provides more ecologically valid data than retrospective questionnaires but can be burdensome, produce noisy or incomplete data, and may not capture the full complexity of experiences like OCD episodes.