Table 1. Items and Item Statistics for the IAT-10 in the South African and United States of America Samples.

				SA sample				USA sample
IAT item	IAT10 item	Item wording	Relevant criterion and content domains1	λ	SE	α	se	λ	SE	α	se
Note. λ = standardized factor loading for the unidimensional confirmatory factor analysis model; SE = standard error of the factor loading estimate; α = slope (discrimination) parameter based on item response theory analysis using the Samejima’s (1969) graded response model; se = standard error for the slope parameter.
1 Relevant criterion and content domains assessed by the IAT-10 items with reference to the IAT manual (Young, 2020) and Lortie & Guitton (2013).
From Caught in the net: How to recognize the signs of internet addiction--and a winning strategy for recovery (pp. 31–33), by K. S. Young, 1998, Wiley. Copyright 1998 by Wiley. Reprinted with permission.
3	1	How often do you prefer excitement of the internet to intimacy with your partner?	Preference for online social interaction/Neglect of social life	.50	.07	.97	.11	.45	.11	.86	.15
5	2	How often do others in your life complain to you about the amount of time you spend online?	Conflict/Loss of control/Excessive use	.47	.07	.89	.11	.51	.10	1.00	.16
9	3	How often do you become defensive or secretive when anyone asks you what you do online?	Secrecy/Defensiveness/Neglect of work	.69	.06	1.64	.16	.65	.09	1.46	.20
10	4	How often do you block out disturbing thoughts about your life with soothing thoughts of the Internet?	Escape/Salience	.58	.07	1.20	.12	.45	11	.85	.15
12	5	How often do you fear that life without the internet would be boring, empty, and joyless?	Salience/Cognitive preoccupation/Escape	.55	.07	1.12	.12	.41	.11	.77	.15
13	6	How often do you snap, yell, or act annoyed if someone bothers you while you are on-line?	Salience/Conflict	.64	.06	1.43	.14	.64	.09	1.41	.20
14	7	How often do you lose sleep due to late-night logins?	Loss of control/Excessive use	.51	.07	1.01	.11	.42	.11	.79	.15
15	8	How often do you feel preoccupied with the internet when offline, or fantasize about being online?	Salience/Cognitive preoccupation	.63	.06	1.38	.14	.70	.08	1.66	.23
18	9	How often do you try to hide how long you’ve been online?	Excessive use/Secrecy/Defensiveness	.64	.07	1.42	.14	.76	.08	1.99	.28
20	10	How often do you feel depressed, moody, or nervous when you are offline, which goes away once you are back online?	Withdrawal/Excessive use	.52	.07	1.03	.12	.79	.07	2.16	.30