The study says shoot-to-kill video games improve quick-thinking and make players more able to cope with the demands of modern life.
It refutes claims video games turn teenagers into violent criminals — and argues parents should encourage their kids to enjoy a bit of virtual blood-and-guts.
The team of researchers from the Netherlands also suggested that games consoles should be installed in nursing homes.
"If elderly people had a lot of problems with their thinking they could play video games to improve their minds," said assistant professor Dr. Lorenza Colzato, of Leiden University's psychology department.
"This could become a common nursing home activity; it would be a successful strategy."