I am currently working on a booklet for college about Media Psychology. This is a new and interesting area that we will be teaching our second years next year.
There are some old chestnuts like whether violence in the media makes us more aggressive. But now we look at computer games and the internet and not just films & TV. But still the evidence is not as conclusive as you might think. There is also evidence for media like computer games actually being good for us.
The booklet also covers how media persuades us and influences our attitudes and a section that looks at why we are so interested in celebrities and how much we worship them.
If we get to publish the booklet somewhere as a PDF I’ll add the link.