4173 said:
Where are you getting all that? It looks to me like Viera just ran a survey, and then proposed new research questions (focus on boys, and children from at-risk families) based on the collected data. Then the columnist made a bunch of unsupported claims.
Ok, just focussing on Vieira's words alone, and assuming that he took all possible considerations in hand.
...but the research suggests that children - particularly boys - who are frequently exposed to these violent games are absorbing a sanitized message of 'no consequences for violence' from this play behavior, The concern arises when children are taking in this message and there is a convergence of other negative environmental factors at the same time, such as poor parental communication and unhealthy peer relationships."
Research cannot suggest, it can only find potential correlations which can be then tested against the control group (missing) to find causations.
Children is a poor term to use for subjects 7-15 because their level of emotional intelligence required to take in this information varies a great deal due to their emotional growth at differing stages of that process.
Frequent exposure is not defined, and here we come to the central crux. If frequent exposure is harmful, could moderate exposure not be? Also, if you are exposing "children" to "these violent games" (All three words there are subjective), then you are either dealing with potential lying, or potential illegality. In the first case, boys are more likely to exaggerate details to impress than girls due to a number of reasons. (I could cite studies but I'll try for common sense here.) In the second case, you are giving children access to Mature games, which is illegal.
"are absorbing a sanitized message of 'no consequences for violence' from this play behavior," Unfounded, unscientific opinion. This hypothesis was never tested. You would actually have to define a separate study to show this.
Equally, given the lack of control group, this could also be caused by the subject's homelife, school or the test itself.
From the word "concern" onwards, Vieira is hypothesizing without study. Correlating two undefined terms that, in themselves, could produce the reactions that he has been seeing.
Statistically, the results aren't significant in themselves because of the lack of control group.