Directory For a Sex Photos : marxism-leninism-utenaism: psychologists: hmm, it looks like negative reinforcement/incentives are effective as temporary motivators but actually lower motivation once they’re removed. people become less interested in a thing if they were made to do
terranghost Sex Photos Directory
there will be ads
there will be ads
there will be ads
there will be ads
there will be ads
there will be ads
there will be ads
there will be ads
there will be ads
there will be ads
» marxism-leninism-utenaism: psychologists: hmm, it looks like negative reinforcement/incentives are effective as temporary motivators but actually lower motivation once they’re removed. people become less interested in a thing if they were made to do