Table 1.

Bayesian Estimation Results of MIRT Models

	Single-level MIRT			Multilevel MIRT
	EAP (SD)	p	99% CI	EAP (SD)	p	99% CI
Constitutional Law on
UGPA	0.601 (.062)	.000	0.442, 0.763	0.596 (.063)	.000	0.433, 0.759
LSAT	0.035 (.004)	.000	0.025, 0.046	0.033 (.004)	.000	0.022, 0.042
Contracts on
UGPA	0.487 (.056)	.000	0.343, 0.632	0.478 (.057)	.000	0.331, 0.624
LSAT	0.026 (.003)	.000	0.018, 0.034	0.023 (.003)	.000	0.013, 0.029
Criminal Law and Procedure on
UGPA	0.439 (.067)	.000	0.265, 0.610	0.425 (.067)	.000	0.254, 0.598
LSAT	0.041 (.004)	.000	0.030, 0.051	0.038 (.004)	.000	0.028, 0.046
Evidence on
UGPA	0.510 (.058)	.000	0.359, 0.658	0.503 (.059)	.000	0.350, 0.655
LSAT	0.035 (.003)	.000	0.026, 0.043	0.032 (.004)	.000	0.020, 0.040
Real Property on
UGPA	0.471 (.057)	.000	0.323, 0.617	0.458 (.058)	.000	0.311, 0.608
LSAT	0.042 (.004)	.000	0.033, 0.052	0.037 (.004)	.000	0.025, 0.047
Torts on
UGPA	0.415 (.062)	.000	0.257, 0.577	0.415 (.064)	.000	0.249, 0.581
LSAT	0.024 (.003)	.000	0.016, 0.032	0.022 (.005)	.000	0.009, 0.033
‘Pass or Fail’ on
Constitutional Law	0.869 (.315)	.002	0.060, 1.760	0.995 (.402)	.004	−0.042, 2.211
Contracts	1.173 (.418)	.002	0.145, 2.381	1.359 (.520)	.002	0.103, 2.991
Criminal Law and Procedure	0.847 (.360)	.007	−0.072, 1.849	1.002 (.432)	.005	−0.063, 2.299
Evidence	1.130 (.343)	.000	0.284, 2.101	1.305 (.424)	.000	0.352, 2.611
Real Property	0.816 (.394)	.017	−0.200, 1.927	0.950 (.460)	.017	−0.282, 2.305
Torts	1.099 (.385)	.002	0.136, 2.205	1.279 (.493)	.002	0.093, 2.730
‘Pass or Fail’ on
UGPA	−0.599 (.259)	.007	−1.316, 0.036	−0.695 (.303)	.004	−1.572, 0.020
LSAT	−0.104 (.025)	.000	−0.178, −0.046	−0.116 (.026)	.000	−0.180, −0.059

Note. EAP represents expected a posteriori, which is a point estimate. SD represents standard deviation. p represents one-tailed p-value. 99% CI represents 99% credibility interval.