Table 5.

Monte Carlo Analysis of Bias in the Standard Errors of the Standardized Effect Size (GMA d) from Slopes and Intercepts

N	Parameter	Coverage						Percent Bias						Confidence Interval Bias
		Eq		Delta		BTSP		Eq		Delta		BTSP		Eq		Delta		BTSP
		S	I	S	I	S	I	S	I	S	I	S	I	S	I	S	I	S	I
50	.3464	.936	.933	.942	.939	.954	.951	4.02	5.81	3.35	4.63	2.66	1.15	.014	.017	.008	.011	−.004	.001
50	.6928	.935	.925	.941	.938	.954	.949	4.71	8.00	3.26	4.67	2.75	1.12	.015	.025	.009	.012	−.004	.001
100	.3464	.942	.941	.945	.945	.952	.950	1.78	3.13	1.29	2.21	1.52	.59	.008	.009	.005	.005	−.002	.000
100	.6928	.943	.936	.947	.947	.952	.950	2.47	5.08	1.22	1.96	1.60	.79	.007	.014	.003	.003	−.002	.000
150	.3464	.940	.944	.942	.947	.946	.951	2.17	2.47	1.78	1.53	.00	.27	.010	.006	.008	.003	.004	.001
150	.6928	.939	.939	.942	.947	.946	.949	2.90	4.57	1.76	1.50	.04	.26	.011	.011	.008	.003	.004	.001
250	.3464	.947	.946	.948	.949	.950	.951	1.19	1.57	.83	.70	.15	.26	.003	.004	.002	.001	.000	.001
250	.6928	.945	.941	.948	.948	.949	.952	1.90	3.66	.77	.68	20	.34	.005	.009	.002	.002	.001	.002
500	.3464	.944	.948	.945	.951	.948	.950	1.46	1.11	1.17	.25	.66	.12	.006	.002	.005	.001	.002	.000
500	.6928	.944	.943	.946	.951	.947	.950	2.17	3.03	1.16	.00	.58	.36	.006	.007	.004	.001	.003	.000
Mdn		.942	.941	.942	.947	.950	.950	2.17	3.40	1.26	1.52	.62	.35	.008	.009	.005	.003	.000	.001

Note. Coverage = 95% coverage, Confidence Interval Bias = difference between coverage and .950, delta = delta method, BTSP = bootstrap, Eq = post hoc equations, delta = delta method, S = GMA d from slope difference, I = GMA d from intercept difference.