Received the Combination of 3D VR and Hands-on Horticultural Activities.

Received scheduled activities, such as physical fitness, paper cutting, etc., without any gardening activities.

The intervention program consisted of 8 two-hour sessions that were conducted once a week for 8 consecutive weeks.

Rosenberg Self-Esteem Scale consists of 14 items and each item is scored on a Likert-type scale that ranges from 1 (strongly agree) to 4 (strongly disagree), with higher scores indicating a higher level of self-esteem.

The Chinese version of the Geriatric Depression Scale was used, which has a total of 15 items. All items were answered as either yes (1) or no (0). The total raw scores ranged from 0 to 15, with a higher score indicating a higher level of depression.

A short-form scale of perceived isolation was used to measure isolation. Each item was scored on a Likert-type scale from 1 (never) to 4 (often), with higher scores indicating a higher level of perceived isolation.

The Chinese version of the Perceived Mastery Scale with a total of 7 items was used. Each item was scored on a Likert-type scale from 1 (strongly agree) to 4 (strongly disagree). The total raw score ranged from 7 to 28, with a higher score indicating a higher level of perceived mastery.

The Achievement Motives Scale (AMS) consists of two kinds of motives, referred to as Motive to Achieve Success, (MAS) and Motive to Avoid Failure (MAF). A short-form scale with 10 items was used to measure achievement motives, with 5 items each for MAS and MAF. Each item was scored on a Likert-type scale from 1 (strongly agree) to 4 (strongly disagree).