Bluetooth-sensed social presence is associated with immediate vigor and delayed fatigue: A multi-method time series analysis
David Willinger, Stefan Stieger

TL;DR
Bluetooth data shows that social interactions boost energy quickly but may lead to fatigue later.
Contribution
This study reveals how social presence affects emotions over time using Bluetooth and self-reports in real-life settings.
Findings
Social presence increases immediate vigor and reduces dejection.
Fatigue follows social presence with a delay of 3–4 hours.
Vigorous emotional states last longer than fatigued states.
Abstract
Social interactions affect emotional well-being, yet their temporal dynamics remain understudied in natural settings. We examined these patterns through an experience sampling method study with 80 participants over two weeks (k = 3,716 assessments), combining Bluetooth device counts (n = 123,574) as a social presence proxy with self-reported emotional states. Using linear mixed-effects models, continuous-time structural equation models, and multi-state Markov analyses, we uncovered complex temporal relationships between social presence and emotions. Our findings revealed that social presence was associated with increased immediate vigor and reduced dejection, followed by delayed fatigue. Bidirectional relationships emerged between social presence and negative mood, with peak effects occurring 3–4 h after initial contact. State-transition analyses demonstrated longer persistence of…
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Taxonomy
TopicsBluetooth and Wireless Communication Technologies · Impact of Technology on Adolescents · Chronic Obstructive Pulmonary Disease (COPD) Research
