Flight International mag of 28 October 1078 had an article on Cessna spinning per a Cessna test pilot. Some extracts relevant to this thread:
Hand off recoveries in the 152: "certainly recovered .. after two turns but lost as much height in the process as if it had spun for another four turns before recovering."
Effect of ailerons in the 152: "Even small amounts of aileron deflection into the spin may increase the rotation rate and prolong recovery." i.e aileron into the spin makes this one go flatter.
One of Gene Beggs' articles on spinning noted that the Beggs/Mueller method failed to recover a 150 - he related a discussion he had with Bill Kershner on the subject then confirmed it himself.
Worth repeating - read the POH for the type - spin characteristics differ significantly between one type and another.