Researchers Studying the Effects of Videogame Training on the Cognitive

Multiple Choice

Researchers studying the effects of videogame training on the cognitive abilities of older adults expose separate groups of male and female participants to a training condition and two other groups to a no-training condition in performance on a cognitive test. They then conduct a similar comparison involving male and female younger adults. In this study, the only true independent variable is:

A) videogame training
B) age group
C) cognitive performance
D) gender