Table 8.

Decomposition of Change for Occupational Sex Segregation, 1970 to 1980

	Total Effects				Component
					Compositional Effects				Dissimilarity Effects
	1980	1970	Decomposition		Standardized		Decomposition		Standardized		Decomposition
			Effect	%	1980	1970	Effect	%	1980	1970	Effect	%
Observed Index	59.48	67.81	−8.33	100.0
Component Sums			−8.33	100.0			−1.63	19.5	60.47	67.17	−6.70	80.5
Variable Category
Total for occupation			−4.96	59.5	62.98	64.59	−1.61	19.3	30.23	33.59	−3.35	40.2
Managers			0.21	−2.5	3.48	2.61	0.87	−10.5	1.19	1.86	−0.67	8.0
Professionals			−0.15	1.8	7.66	6.90	0.76	−9.1	3.19	4.10	−0.91	11.0
Technicians			−0.60	7.2	1.77	2.32	−0.55	6.6	1.00	1.05	−0.05	0.6
Sales			−0.49	5.9	9.52	10.17	−0.66	7.9	5.02	4.85	0.17	−2.0
Administrative support			−1.19	14.3	3.97	5.07	−1.10	13.3	2.22	2.30	−0.08	1.0
Service, private			−0.23	2.8	3.31	3.59	−0.28	3.4	1.75	1.70	0.05	−0.6
Service, protective			−0.52	6.3	2.90	3.39	−0.49	5.9	1.56	1.59	−0.03	0.4
Service, other			0.17	−2.1	7.38	6.69	0.69	−8.3	3.26	3.78	−0.52	6.2
Precision production			−0.70	8.4	5.72	5.83	−0.11	1.3	2.59	3.18	−0.59	7.1
Machine operatives			−0.61	7.3	13.82	13.92	−0.09	1.1	6.68	7.20	−0.52	6.2
Transportation			−1.15	13.8	0.70	1.76	−1.07	12.8	0.57	0.66	−0.09	1.0
Handlers, laborers			0.07	−0.9	1.02	0.93	0.09	−1.1	0.48	0.50	−0.02	0.2
Farming, forestry, and fishing			0.24	−2.8	1.72	1.39	0.32	−3.9	0.73	0.82	−0.09	1.1
Total for region			−3.37	40.5	63.77	63.79	−0.02	0.2	30.23	33.59	−3.35	40.2
Northeast			−2.76	33.2	13.78	15.82	−2.04	24.4	7.05	7.77	−0.73	8.7
North Central			−2.00	24.0	16.87	18.00	−1.13	13.5	8.29	9.16	−0.90	10.4
South			0.74	−8.8	21.03	19.30	1.73	−20.8	9.59	10.59	−1.00	12.0
West			0.65	−7.8	12.08	10.67	1.41	−17.0	5.31	6.07	−0.76	9.1

Source: U.S. Bureau of the Census (1984).