social psychology

Hi!
I will need the answer to the first question in one hour (a few minutes more OK), but the second one is OK if it takes 2.5 hours.  Half a page answer per question is enough. Please don’t use as advanced English as possible, as basic as possible. 

1. Descrive one study (overall design and main results) demonstrating the ‘false consensus effect’ and discuss possible explanations for this phenomenon.
2. Describe two theories/hypothesis about why people are behaving altruistically. Describe studies 9design and general results) that have been used to support these theories.