30 years of research? As has been said, that puts the research as starting in 1980.
Let's see, games released in 1980...
Zork, no pictures or anything, no one would consider it a problem.
Pac-Man, It's Pac-Man...
Space Panic, old platformer? Next!
Alakabeth, mostly text, no issue
Rogue, Yeah, no...
Defender, hell no
Battlezone, hahaha, no.
Oddly enough, it appears as if 1980 wouldn't have stirred up any interest in the effects of violent video games on children.
Let's see, games released in 1980...
Zork, no pictures or anything, no one would consider it a problem.
Pac-Man, It's Pac-Man...
Space Panic, old platformer? Next!
Alakabeth, mostly text, no issue
Rogue, Yeah, no...
Defender, hell no
Battlezone, hahaha, no.
Oddly enough, it appears as if 1980 wouldn't have stirred up any interest in the effects of violent video games on children.