Dr. Martinez is curious as to whether exposing people to violent video games causes them to be more aggressive. He assigns half his participants to play a video game for 5 minutes and the other half to play for 7 minutes. He finds that there is no relationship between playing the game longer and being more aggressive. What might be to blame for this null effect

A weak and ineffective IV might be to blame for this null effect.

Explanation:

Although it can be said that information influences character but the amount of information that does might different from one person to another. Most people are influenced on how they behave by what they fix their mind to always. Someone who watches football most time of his day would definitely speak or act like a footballer or make use of football terms, this is applicable for all spheres of life considering people. For Dr. Martinez experiment, what might be the null effect would be a weak and ineffective IV might be to blame for this null effect.

answer; procedural justice;

answer; all of the answers are correct;