Table 4. Reliabilities of Activity Scales Using Internal Consistency (Cronbach's Alpha) and Retest Reliability (Pearson Correlations).

	Study 1 - Reliability				Study 2 - Reliability			Study 1 - Retest
	All (N = 267)	Young (n = 44)	Middle (n = 131)	Older (n = 92)	All (N = 218)	Young (n = 81)	Older (n = 137)	All (N = 133)	Young (n = 18)	Middle (n = 62)	Older (n = 53)
Physical (6)	.78	.82	.79	.74	.74	.82	.68	.67	.55	.70	.69
Craft (4)	.79	.83	.81	.78	.79	.77	.81	.79	.69	.76	.85
Games (6)	.77	.83	.83	.67	.75	.84	.69	.82	.79	.77	.88
TV (4)	.62	.65	.71	.41	.56	.72	.45	.61	.69	.67	.43
SocPrivate (6)	.75	.75	.79	.63	.78	.71	.77	.70	.36	.75	.65
SocPublic (5)	.75	.77	.81	.63	.61	.70	.54	.78	.64	.57	.73
Religious (3)	.67	.53	.65	.74	.68	.72	.64	.77	.68	.70	.82
Developmental (8)	.74	.72	.70	.63	.66	.59	.55	.75	.74	.66	.72
Experiential (7)	.57	.45	.53	.54	.62	.47	.38	.77	.67	.75	.79
Technology (6)	.57	.69	.56	.45	.58	.57	.54	.78	.63	.80	.76
Travel (3)	.43	.24	.59	.15	.55	.61	.46	.41	.28	.30	.50

Note. SocPrivate: Social-Private. SocPublic: Social-Public. Numbers in brackets refer to number of items per scale. For descriptive purpose, the lifespan sample of Study 1 was grouped in young: 18–30 years of age, middle-aged: 31–60 years, and older individuals: 61–81 years)