Can someone translate this "smart" word talk for me?

I feel like a complete idiot for not understanding some of these words such as “Hypothesized Mediator”. I keep stopping to google these words! I’m not allowed to use any other source. I just copy and pasted some sentences from the article I didn’t understand. What the heck is mediational anyways? Even Fluther or Microsoft word doesn’t know it!

Hypothesized mediators of this effect included college alcohol beliefs (beliefs that drinking is central to college life), positive and negative alcohol expectancies, and descriptive and injunctive norms.

Movie exposure also had significant indirect effects on drinking through all of the hypothesized mediators, with the exception of negative alcohol expectancies.

All mediated movie exposure’‘s effects on drinking consequences, with the exception of injunctive norms. Contrast analyses revealed that college alcohol beliefs had the strongest mediational effects in the relationship between movie exposure and both drinking and consequences.