# Ecological Momentary Assessment **Domain:** Psychology / Behavioral Measurement **Doc Type:** Scientific Method Node **Maturity:** Established **Related:** [[Digital Phenotyping]], [[Autobiographical Memory]], [[Neural Data Provenance]] --- ## Definition **Ecological momentary assessment (EMA)** collects repeated reports of experience, behavior, or context close to the time and place in which they occur. It reduces some retrospective-memory biases and supplies ground truth or interpretive context for passive sensing. ## Architectural role EMA can anchor behavioral and neural streams to a participant's own reports. Timing, prompt design, compliance, missingness, burden, and cultural validity remain part of the evidence.