Table 2.

Statistical parameters of the ERI scales

	Effort	Reward	Intrinsic value	Societal esteem	Affection from child	Recognition from spouse	Overcom-mitment
Number of items	8	11	3	3	2	3	4
Range sumscore	8 - 40	11 - 55	3 - 15	3 - 15	2 - 10	3 - 15	4 - 16
M	20.9	22.6	5.56	7.75	3.80	6.85	9.40
SD	7.80	8.47	2.52	2.99	2.16	3.54	2.79
Cronbachs Alpha	0.92	0.84	0.69	0.73	0.82	0.82	0.81

Notes: M = Mean value, SD = Standard deviation.