Iting scenes and statements from the filmConspiracy,analyse the group processses being played out.

on 20 January,1945, 15 senior Nazis gathered for a top-secret meeting at a country house on the edge of Berlin.Over a buffet lunch, they sketched out plans for the Final Solution.
Namely,to what extent can psychological theories about the nature of group processes explain this films depiction of the Vannsee meeting?
I should be able to draw on the literature a number of areas:
Group Development, theories explaining the prejudice, discrimination, stereotyping
Positionality, desicion making, social Constructionism
To answer it effectively you must cite psychological evidence to support your analysis.
to be precise and to clearly indicate both the structure of responce & theories which apply to the question.