Table 4.
Reliability measures of the ACSID-11 and IGDT-10 measuring specific Internet-use disorders.
| ACSID-11 | IGDT-10 | |||||
| Frequency | Intensity | (ASSIST version) | ||||
| Type of disorder | α | λ2 | α | λ2 | α | λ2 |
| Gaming | 0.900 | 0.903 | 0.894 | 0.897 | 0.841 | 0.845 |
| Online buying-shopping | 0.910 | 0.913 | 0.915 | 0.917 | 0.858 | 0.864 |
| Online pornography use | 0.907 | 0.911 | 0.896 | 0.901 | 0.793 | 0.802 |
| Social-networks use | 0.906 | 0.912 | 0.915 | 0.921 | 0.855 | 0.861 |
| Online gambling | 0.947 | 0.950 | 0.944 | 0.946 | 0.910 | 0.912 |
Notes. α = Cronbach's alpha; λ 2 = Guttman's lambda-2; ACSID-11 = Assessment of Criteria for Specific Internet-use Disorders, 11 items; IGDT-10 = Ten-Item Internet Gaming Disorder Test; Sample sizes varied for gaming (n = 440), online buying-shopping (n = 944), online-pornography use (n = 340), social-networks use (n = 854), and online gambling (n = 200).