. 2019 Dec 31;17(1):290. doi: 10.3390/ijerph17010290

Table 5.

Internal consistency, test–retest reliability, and item analysis of the Chinese version of revised Internet Gaming Cognition Scale.

	Cronbach’s Alpha		Item—Scale Scale Correlation	Item—Subscale Correlation	Item—Other Subscale Correlation
Items	Subscale	Total	Item—Scale Scale Correlation	Item—Subscale Correlation	Item—Other Subscale Correlation
Overall scale	0.91	-	-	-	-
Factor 1: Perceived rewards of Internet gaming	0.87	-	-	-	-
IGC 3	0.86	0.94	0.63 ***	0.66 ***	0.45 ^a*/0.50 ^b*
IGC 5	0.85	0.94	0.72 ***	0.75 ***	0.55 ^a*/0.54 ^b*
IGC 6	0.84	0.93	0.72 ***	0.78 ***	0.51 ^a*/0.51 ^b*
IGC 17	0.85	0.93	0.69 ***	0.74 ***	0.52 ^a*/0.46 ^b*
IGC 20	0.85	0.93	0.67 ***	0.77 ***	0.42 ^a*/0.48 ^b*
IGC 22	0.85	0.93	0.70 ***	0.76 ***	0.52 ^a*/0.48 ^b*
IGC 24	0.85	0.93	0.69 ***	0.75 ***	0.46 ^a*/0.51 ^b*
Factor 2: Perceived urges for playing Internet games	0.81	-	-	-	-
IGC 7	0.76	0.93	0.71 ***	0.79 ***	0.59 ^a*/0.54 ^c*
IGC 9	0.76	0.93	0.65 ***	0.79 ***	0.51 ^a*/0.47 ^c*
IGC 10	0.76	0.93	0.65 ***	0.81 ***	0.48 ^a*/0.51 ^c*
IGC 13	0.75	0.93	0.67 ***	0.80 ***	0.54 ^a*/0.49 ^c*
Factor 3: Perceived unwillingness to stop playing without completion of gaming tasks	0.72	-	-	-	-
IGC 1	0.66	0.93	0.60 ***	0.73 ***	0.47 ^b*/0.42 ^c*
IGC 2	0.72	0.93	0.52 ***	0.68 ***	0.36 ^b*/0.37 ^c*
IGC 8	0.61	0.93	0.69 ***	0.79 ***	0.55 ^b*/0.51 ^c*
IGC 11	0.64	0.93	0.72 ***	0.75 ***	0.60 ^b*/0.57 ^c*

Note: ***, p < 0.001; ^a, Pearson coefficient for the correlation analyses between factor 1 and factor 2; ^b, Pearson coefficient for the correlation analyses between factor 1 and factor 3; ^c, Pearson coefficient for the correlation analyses between factor 2 and factor 3.