This study investigates the effects of an Acceptance and Commitment Therapy (ACT)-based cognitive intervention on Quality of Life (QOL) and cognitive function among elderly residents with Mild Cognitive Impairment (MCI) in long-term care settings. The study assesses immediate and long-term impacts on cognitive function, psychological flexibility, social engagement, and overall well-being through structured ACT-based training.

This clinical trial explores the impact of an Acceptance and Commitment Therapy (ACT)-based cognitive intervention on Quality of Life (QOL) and cognitive function in elderly residents with Mild Cognitive Impairment (MCI) living in long-term care facilities. The intervention aims to promote psychological flexibility, which is a core process in ACT, and enhance the residents' ability to engage in meaningful activities despite cognitive limitations.

Participants will engage in structured ACT-based training sessions that include mindfulness exercises, values clarification, and commitment strategies designed to improve cognitive engagement, reduce emotional distress, and foster greater social connection. The study measures both the immediate effects following the intervention and the long-term benefits at follow-up periods to evaluate sustained improvements in cognitive performance, psychological resilience, social involvement, and overall well-being.

By focusing on cognitive and emotional strategies, the intervention seeks to empower elderly residents to live more fulfilling and value-driven lives, even in the face of cognitive decline associated with MCI.

Inclusion Criteria:

• Residents aged 65 and older diagnosed with MCI, able to provide informed consent, and residing in participating long-term care facilities.

Exclusion Criteria:

• Individuals with severe cognitive impairment, unstable medical conditions, or psychiatric diagnoses that would interfere with participation.