1. WHO diagnostic criteria (ICD-11 6C51)
All three must persist 12+ months with impairment in daily functioning (academic / occupational / relational / health):
- Loss of control: Cannot control onset, frequency, duration, or termination of gaming.
- Priority reversal: Gaming always takes precedence over other interests and daily activities.
- Continuation / escalation despite negative consequences: Academic failure, family conflict, health decline — yet gaming time increases.
Important: long gaming time alone ≠ disorder. The key is impairment.
2. Variable-Ratio Reinforcement
B.F. Skinner's 1957 experiment: when a pigeon presses a button for reward, the pigeon presses hardest and longest when rewards come on "average every 10 presses (irregular)" rather than "exactly every 10". Same principle:
- Gacha / loot box: 0.5% SSR rate → "the next pull might be it"
- MMORPG boss drops: 1% rare items
- Slot machine: identical mechanism to gambling
- Daily login rewards: "loss" feeling if you miss it
The midbrain dopamine circuit (VTA → NAc) responds most strongly to "uncertain rewards" (Schultz, 1998). The same brain circuit as slot-machine gambling.
3. Korea's 14-year shutdown-law experiment
November 2011 "Youth Protection Act §26" was enforced: under-16s are forcibly cut off from PC online gaming midnight–6 a.m. A "selective shutdown" was added in 2014 (time limits at parents' request). Fully abolished in November 2021.
10-year follow-up analyses (SNU Graduate School of Public Administration 2020, KIYP 2021):
- Adolescent average gaming time: no statistically significant change
- Shifted to mobile games, used parents' IDs, VPN — 90%+ circumvention
- Sleep-time improvement: 0–5 minutes (effectively none)
Lesson: environmental restriction alone cannot resolve behavioral addiction. We need to address motivation, comorbid disorders, and relationships.
4. Comorbid disorders — the real face of "gaming addiction"
Korea Gaming Healing Center analysis (8,200 patients 2018–2022) of adolescents and young adults presenting with gaming disorder:
| Comorbidity | Rate |
|---|---|
| ADHD | 52% |
| Depression | 43% |
| Anxiety disorders (including social anxiety) | 34% |
| Autism spectrum | 9% |
| None (primary gaming disorder) | 22% |
That is, 78% fall into gaming as self-medication for another disorder. Just "cutting off" gaming leaves the depression and anxiety untreated.
5. Why games become a "refuge"
- School bullying → guild recognition in-game
- Academic stress → game's clear reward system (XP, levels)
- Family conflict → emotional support from game friends
- Social anxiety → text / voice chat easier than face-to-face
6. Family response — what works and what does not
Does not work
- Forced shutoff (cut Wi-Fi, break the console) — temporary, destroys trust
- "Why are you only gaming?" — child games more
- Material rewards ("study and I'll buy you a new game") — ineffective
Works
- Show interest ("What game is it? Can you teach me?")
- Psychiatric evaluation (ADHD, depression comorbidity)
- Guarantee family meal / conversation time
- Explore alternative activities (sports, arts) together
- For severe cases, CBT-IA (CBT for internet addiction), 12–20 sessions
7. Self-test
- IGDT-10 (10-item Internet Gaming Disorder Test, WHO recommended)
- Score ≥ 5 → recommend professional evaluation
8. Resources
- Korea Gaming Healing Center: 1566-9007 (Seoul + 7 nationwide)
- Smart Rest Center (Korean Agency for Digital Opportunity): 1599-0075
- Youth counseling 1388
- If severe depression or suicidal ideation is also present: 1577-0199
