The Effects of Group Music Therapy on the Emotional Health of Residents in Long-Term Care Facilities: A Pilot Study

Taiwan is entering a super-aged society, and an increasing number of older adults reside in long-term care (LTC) facilities. Although institutional care provides medical and daily living support, many residents experience loneliness, depressive symptoms, and reduced emotional well-being. Non-pharmacological interventions such as group music therapy have demonstrated beneficial effects on mood regulation, social interaction, and psychological health. However, most previous studies have relied primarily on self-report questionnaires or observer-rated scales, which may be influenced by cognitive status, expressive ability, or assessment bias.

This pilot study aims to evaluate both the psychological effects of group music therapy and the feasibility of integrating an artificial intelligence (AI)-based multimodal emotion recognition model into emotional assessment in LTC settings.

Study Design

This study uses a quasi-experimental one-group pretest-posttest design. Approximately 20 residents from a long-term care facility in central Taiwan will be recruited using convenience sampling.

Inclusion criteria include:

Age 65 years or older

Residency in the facility for at least 3 months

Possesses basic cognitive functions (0-2 errors on the SPMSQ scale)

Ability to participate in group activities

Provision of informed consent for participation and facial image collection

Residents with severe dementia, major psychiatric disorders, neurodegenerative diseases, severe sensory impairments, or recent participation in other psychological or music therapy programs will be excluded.

Intervention

Participants will receive a 6-week group music therapy program. Each participant will attend one 60-minute session per week, for a total of 6 sessions. Sessions will be conducted in small groups (approximately 10 participants per group) and led by a trained music therapist with support from nursing staff and research personnel.

Each session will include:

Music listening using culturally familiar songs

Instrument interaction (e.g., tambourines, hand bells, xylophones)

Singing and vocal expression activities

Short group sharing discussions to promote emotional expression and social connection

The intervention is designed to progressively enhance emotional engagement, social interaction, and psychological comfort in a supportive group environment.

Outcome Measures

Emotional health outcomes will be assessed at two time points:

T0 (baseline): Before the first session

T1 (post-intervention): Within 24 hours after the sixth session

Subjective measures include:

International Positive and Negative Affect Schedule Short Form (I-PANAS-SF)

Geriatric Depression Scale - 15 item version (GDS-15)

UCLA Loneliness Scale Version 3

Barthel Index (functional status, baseline only)

AI-Based Multimodal Emotion Analysis

During each music therapy session, participants' facial images will be captured using a non-invasive camera system under standardized environmental conditions.

The PaLI Gemma 2 multimodal model will analyze static facial images to generate:

Categorical emotion outputs (e.g., happy, sad, angry, fear, surprise, disgust, neutral)

Continuous emotion dimensions (valence and arousal values)

Emotion recognition outputs from Session 1 (baseline representation) and Session 6 (post-intervention representation) will be compared with corresponding subjective questionnaire scores. Correlation analyses (Pearson or Spearman) will examine the consistency and complementary value between AI-based emotion detection and self-reported emotional states.

Statistical Analysis

Descriptive statistics will summarize demographic and baseline characteristics.

Pre-post differences in emotional outcomes will be examined using:

Paired t-tests for normally distributed data

Wilcoxon signed-rank tests for non-normally distributed data

Effect sizes (Cohen's dz or r) and 95% confidence intervals will be reported to support future sample size estimation for larger trials.

• Geriatric Depression Scale [Time frame: Baseline, Week 6]
• UCLA Loneliness Scale [Time frame: Baseline and Week 6]