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. 2018 Jul 13;9:315. doi: 10.3389/fpsyt.2018.00315

Table 2.

Ratings for arousal, valence, craving, and compulsion elicited by each stimulus category.

HC IGD OCD Statistical analysisa Post-hoc analysis
(N = 22) (N = 20) (N = 20) F P IGD vs. HC OCD vs. HC IGD vs. OCD
GAME STIMULI (LOL, FIFA, SA)
Arousalb 2.7 (1.7) 4.7 (1.6) 4.1 (1.3) 8.934 <0.001** <0.001** 0.020* 0.385
Valencec 4.7 (0.8) 5.3 (0.9) 4.9 (1.3) 1.655 0.200 0.183 0.851 0.449
Cravingd 2.6 (1.9) 4.6 (1.8) 3.7 (1.5) 6.967 0.002** 0.001** 0.107 0.246
OCD-RELATED STIMULI (WASHING, CHECKING)
Arousalb 2.8 (1.3) 4.1 (1.4) 4.8 (1.5) 10.855 <0.001** 0.012* <0.001** 0.272
Valencec 3.8 (0.5) 3.7 (0.6) 3.5 (1.1) 0.978 0.382 0.885 0.357 0.649
Compulsione 3.3 (1.5) 4.4 (1.6) 5.1 (1.8) 6.398 0.003** 0.067 0.002** 0.456
NEUTRAL STIMULI (IAPS NEUTRAL)
Arousalb 2.0 (0.8) 2.7 (1.4) 3.5 (1.3) 8.591 0.001** 0.164 <0.001** 0.072
Valencec 5.8 (0.9) 5.6 (0.7) 5.5 (0.9) 0.932 0.399 0.612 0.392 0.931

HC, healthy control; IGD, internet gaming disorder; OCD, obsessive-compulsive disorder; LOL, League of Legend; SA, Sudden Attack; IAPS, International Affective Picture System.

Data are presented as means (standard deviation).

*

P < 0.05.

**

P < 0.005.

a

Analysis of variance.

b

Arousal: extreme calmness (0) ~ extreme excitement (10).

c

Valence: extremely negative (0) ~ extremely positive (10).

d

Craving: no desire to play game (0) ~ extreme desire to play game (10).

e

Compulsion: no desire to engage in compulsive behavior (0) ~ extreme desire to engage in compulsive behavior (10).