A presentation on media effects for a communications theory course presented to journalism students at Zhejiang University of Media and Communications. The presentation includes introductions to the main approaches to analysing media effects and touches on the strengths and weaknesses of those approaches. It concludes with a case study based around the TV show Dexter. The information for the presentation was drawn from the website: http://www.mediaknowall.com/ which has an extensive section on media effects. The images were all stolen from the internet and the overall structure is my own. Thank you to all those who contributed.