Development and Validation of a Cross-Device Platform for Anhedonia Trend Visualization by Using Ecological Momentary Assessment and Moving Averages (Part I): Protocol for a Methodological Pilot Study.

ABSTRACT:

Background

Anhedonia is a core symptom of depressive disorders. Although group-level cutoff points for the Snaith-Hamilton Pleasure Scale (SHAPS) are established, real-time, individual-level monitoring remains limited. Ecological momentary assessment (EMA) enables high-frequency sampling, and simple moving averages (SMA; 7/14/30 days) offer an interpretable way to smooth daily signals and surface early-warning trends.

Objective

The aim of this study was to develop and validate a cross-device platform that collects EMA-based SHAPS responses and visualizes SMA trends for individual anhedonia monitoring. This part I protocol focuses on platform design, feasibility, usability, data quality, and initial analytical validity to inform subsequent evaluation.

Methods

We will c

SUBMITTER: Ho YC 

PROVIDER: S-EPMC12757707 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature