Table 1.

GPCM parameter estimates and item fit statistics

	$\mathit{\alpha }$	${\mathit{\beta }}_2$	${\mathit{\beta }}_3$	$X^2$	df	p
X-rated movies	0.58	−1.52	−1.47	253.53	27	<0.01
Modern art	0.60	0.11	0.09	232.92	27	<0.01
Women’s liberation	1.00	0.22	0.80	204.93	27	<0.01
Abortion	1.01	−0.65	−0.16	112.60	27	<0.01
Gay rights	1.65	−0.90	−1.95	235.90	27	<0.01
Liberals	1.44	0.57	−0.67	357.63	27	<0.01
Living together	1.08	−0.91	−0.53	205.03	27	<0.01
Divorce	0.74	−0.44	0.23	147.16	27	<0.01
School prayer (rev. coded)	0.65	−1.86	−2.04	109.54	27	<0.01