TABLE 3.

Results of the item analysis.

	Extreme groups analysis	Item-total correlation		Homogeneity test
Item	Critical ratio value	Item-total correlation	Corrected item-total correlations	Cronbach’s α if item omitted	Communalities	Factor loading
P1	41.284***	0.519***	0.456	0.873	0.278	0.527
P2	46.056***	0.553***	0.480	0.872	0.299	0.547
P3	39.364***	0.501***	0.429	0.874	0.247	0.497
P5	39.606***	0.504***	0.441	0.873	0.258	0.508
P6	45.844***	0.553***	0.487	0.872	0.315	0.561
P7	52.139***	0.593***	0.526	0.870	0.350	0.592
P8	33.026***	0.439***	0.364	0.876	0.178	0.422
P9	49.757***	0.588***	0.524	0.871	0.350	0.592
P10	47.672***	0.564***	0.490	0.872	0.313	0.559
P11	50.289***	0.585***	0.517	0.871	0.340	0.583
P12	40.065***	0.508***	0.437	0.873	0.253	0.503
P13	42.641***	0.539***	0.471	0.872	0.298	0.546
P14	38.725***	0.501***	0.423	0.874	0.238	0.488
P15	46.622***	0.567***	0.495	0.871	0.316	0.562
P17	47.257***	0.582***	0.523	0.871	0.355	0.596
P18	42.299***	0.517***	0.447	0.873	0.264	0.514
P19	49.821***	0.590***	0.524	0.870	0.352	0.593
P20	49.701***	0.598***	0.535	0.870	0.359	0.599
P21	46.778***	0.568***	0.498	0.871	0.328	0.573
P22	52.035***	0.601***	0.539	0.870	0.368	0.607

***p < 0.001.