different between preperformance vs postperformance

English

pre- +? performance

preperformance (not comparable)

preperformance (countable and uncountable, plural preperformances)

prior performance
- 1981, Sidney William Bijou, Roberto Ruíz, Behavior modification: contributions to education (page 222)
  Three youths were then taught to engage in these behaviors, which included statements of cooperation and reform. Policemen then evaluated preperformances and postperformances of the youths in simulated interactions with a policeman.

post- +? performance

postperformance (not comparable)

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