So it is conceivable that video game training based gains might be more readily observed the less experience that someone has with video games. Brain Plus IQ  These seem to be the most likely reasons for the different effects in the two studies.  Question: What is the main implication from both studies combined/ what do we know today that we didn't know 3 months ago?  Answer: First, I think that our results suggest promise with regard to video game playing and older adults cognition.  http://rockhardfacts.com/brain-plus-iq/