Table 2.
Factor loadings of the IGD-20 Test and Cronbach’s α of the subfactors
| Middle school (α = .90) | University (α = .92) | All (α = .90) | ||
|---|---|---|---|---|
| Salience-tolerance (α) | .820 | .860 | .840 | |
| IGD1 | I often lose sleep because of long gaming sessions | .535 | .651 | .602 |
| IGD3 | I have significantly increased the amount of time I play games over past year | .601 | .584 | .595 |
| IGD7 | I usually think about my next gaming session when I am not playing | .754 | .775 | .741 |
| IGD9 | I need to spend increasing amounts of time engaged in playing games | .808 | .767 | .788 |
| IGD13 | I think gaming has become the most time consuming activity in my life | .571 | .750 | .663 |
| IGD15 | I often think that a whole day is not enough to do everything I need to do in-game | .661 | .719 | .697 |
| Mood modification (α) | .570 | .610 | .590 | |
| IGD2 | I never play games in order to feel better | .198 | .288 | .238 |
| IGD8 | I play games to help me cope with any bad feelings I might have | .712 | .645 | .678 |
| IGD14 | I play games to forget about whatever’s bothering me | .851 | .895 | .874 |
| Withdrawal (α) | .820 | .820 | .820 | |
| IGD4 | When I am not gaming I feel more irritable | .727 | .761 | .760 |
| IGD10 | I feel sad if I am not able to play games | .764 | .813 | .792 |
| IGD16 | I tend to get anxious if I can’t play games for any reason | .794 | .770 | .781 |
| Conflict (α) | .430 | .580 | .520 | |
| IGD5 | I have lost interest in other hobbies because of my gaming | .588 | .782 | .710 |
| IGD11 | I have lied to my family members because the amount of gaming I do | .576 | .600 | .605 |
| IGD17 | I think my gaming has jeopardised the relationship with my partner | .481 | .659 | .593 |
| IGD19 | I know my main daily activity (i.e., occupation, education, homemaker, etc.) has not been negatively affected by my gaming | .014 | .005 | .013 |
| IGD20 | I believe my gaming is negatively impacting on important areas of my life | .317 | .479 | .392 |
| Relapse (α) | .840 | .800 | .820 | |
| IGD6 | I would like to cut down my gaming time but it’s difficult to do | .814 | .835 | .818 |
| IGD12 | I do not think I could stop gaming | .734 | .665 | .705 |
| IGD18 | I often try to play games less but find I cannot | .845 | .772 | .811 |
Note. IGD-20 Test: 20-item Internet Gaming Disorder Test.