Author/year Name of the study No. of participants Duration Settings Main outcomes
Camp et al.
[7]
An Intergenerational Program for Persons
With Dementia Using Montessori Methods
N=12,
Mean age=90
18 months USA Nursing home Engagement style
Chung
[8]
An intergenerational reminiscence programme for older adults
with early dementia and youth volunteers
N= 51,
Mean age =79
3 months Hong Kong
Community, daycare centre, home
Quality of life, depression
George
[10]
Intergenerational volunteering and quality of life N= 8, Mean age = 85.7 (intervention),
N=7. Mean age = 81.4 (control)
5 months USA
Community, School
Stress,  quality of life
George and Singer
[9]
Intergenerational volunteering and quality
of life for persons with mild to moderate
dementia
N= 8,Mean age=85.7 (intervention),
N=7 with an average age = 81.4 (control)
5 months USA
Community,
School
Stress,  quality of life
George et al.
[11]
Intergenerational volunteering and quality of life N= 8, Mean age = 85.7 (intervention),
N=7. Mean age = 81.4 (control)
5 months USA
Community, School
Stress, depression,cognitive, purpose, and usefulness
Judge et al.
[12]
Use of Montessori-based activities for clients with dementia in adult day care N=9 (intervention),
N=10 (control),
Mean age=81 
9 months USA
Adult day care
Engagement style
Lee et al.
[13]
Effects of intergenerational Montessori-based
activities programming on engagement of nursing
home residents with dementia
N=14, Mean age =90.29 12 months USA
Skilled Nursing home
Engagement style
O'Shea et al.
[14]
The impact of reminiscence on the quality of life of
residents with dementia in long-stay care
N=153 (intervention), N=151 (control),
Mean age= 85.2
22 weeks Ireland
Residential care homes
Agitation, quality of life, depression
Ward et al.
[15]
The Effects of Participation in an
Intergenerational Program on the
Behavior of Residents with Dementia
N=12,
Mean age=85
6 months USA
Long-term care residence
Agitation,laughing, touching, head nodding
Yamagami et al.
[16]
Effect of activity reminiscence therapy as brain-activating
rehabilitation for elderly people with and without dementia
N=18 , Mean age=82.2 12 weeks Japan
Day care centre, group home
Cognitive function, delayed recall,  memory
Table 1: Summary of the studies included.
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