Nick Chater presented this week's episode of Analysis on BBC Radio 4. Nick asks what really drives our choices whether in politics, business or daily life: Precedents or Principles?

The show covers phenomena such as following the crowd, consistency with past choices and rationalising decisions after the fact. Politicians, philosophers, psychologists and businessmen all contribute to the discussion.

You can listen to the episode on BBC iPlayer here.

Nick may already be familiar to Radio 4 listeners from his psychology series The Human Zoo. The Human Zoo is also available on BBC iPlayer . Season Five of the Human Zoo is currently in production and scheduled for airing in early 2015.