Why are schizophrenics starting to respond better to placebos?

Studies of drugs that treat schizophrenia, what are also known as antipsychotics, are having fewer effects over time — and it's not because these drugs are becoming any less effective. Rather it's because patients are responding better to placebos – and it's not immediately obvious why this is happening. » 6/22/12 5:00pm 6/22/12 5:00pm