Psychometric Properties and Validation of the Arabic Academic Performance Rating Scale

Table 4

Rasch analysis of A-APRS-15.

Item	Item mean	Infit MNSQ	Infit ZSTD	Outfit MNSQ	Outfit ZSTD
APRS1	0.36	0.78	−1.4	0.50	−0.2
APRS2	0.42	0.85	−1.0	1.37	0.6
APRS3	0.49	1.37	2.30	1.52	0.80
APRS4	0.45	0.85	−1.0	0.82	0.0
APRS5	0.49	1.18	1.0	1.14	0.4
APRS6	0.63	0.74	−1.60	0.54	−1.0
APRS7	0.66	0.71	−1.8	0.77	−0.3
APRS8	0.65	0.83	−0.9	1.36	0.8
APRS14	0.62	0.86	−0.7	0.61	−0.8
APRS16	0.60	0.92	−0.3	0.71	−0.5
APRS17	0.71	0.64	−2.1	0.47	−1.3
APRS9	0.81	0.96	0.0	0.55	−0.7
APRS10	0.82	1.09	0.4	1.20	0.5
APRS11	0.80	1.13	0.5	0.62	−0.3
APRS12	0.89	0.68	−1.2	0.36	−0.6

Single global construct; Partial Credit Model was used for Rasch analysis.