关键词: 养老机构, 主观认知下降, 烹饪, 严肃游戏, 慢性病护理

Abstract:

Objective To develop a cooking serious game for older adults with subjective cognitive decline （SCD） in residential care facilities and evaluate its preliminary usability and user experience，thereby providing a prototype for subsequent cognitive training intervention studies. Methods Guided by flow theory，the content of the cooking serious game including 4 training phase was developed through semi-structured interviews，literature analysis，brainstorming，and an expert working group meeting. Purposive sampling was used to recruit 30 older adults with SCD from 2 residential care facilities in Suzhou，China，between April and May 2026 for usability testing. Usability was assessed using task completion rate，task completion time，numbers of errors and prompts，the System Usability Scale（SUS），and a satisfaction questionnaire. User experience was further explored through semi-structured interviews. Results The overall task completion rate was 92.50%. The total time to complete the 4 tasks was 46.29（39.71，49.90） min. The total numbers of errors and prompts were 3（2，4） and 4（3，6），respectively. The mean SUS score was（81.67±10.79） points，and the satisfaction rate was 89.86%. The semi-structured interviews yielded 3 main themes：enhancing engagement through familiar cooking scenarios，task comprehension and operational difficulties under multisensory prompts，and the experience of progressive challenges alongside individualized needs. Conclusion The cooking serious game developed in this study demonstrated good preliminary usability among older adults with SCD in residential care facilities. Future studies should refine the game prototype and conduct larger-sample，longer-term intervention studies to further evaluate its effectiveness for cognitive training.

Key words: Residential Care Facilities, Subjective Cognitive Decline, Cooking, Serious Game, Chronic Disease Nursing