reasons why they are short-lived
1-changing situation of members = most members come from the margins of society e.g unemployed, homeless
-usually lead strict + self-denying lives
-social status is likely to rise + wealth increase
-they joined a sect to overcome their status frustration but over-time when their situation improves they re-join the mainstream society
-new situation no longer get rejected by the society
-sects must change their beliefs in order for the people to be accepted by the wider society