Using a mobile data collection system that leverages smartphone technology to capture an abundance of time-varying information both passively (i.e., behavioral sensing) and actively (e.g., Ecological Momentary Assessment or EMA) we aim to: 1) Evaluate whether need for care is associated with real-time/real-place AVH experience; 2) Examine relationships between baseline demographic and functional variables, time-varying social and contextual factors, and AVH; 3) Test relationships posited in a cognitive model of AVH.