“Recent much-publicized studies have claimed that scepticism about free will makes people behave less morally. “Disbelief in Free Will Increases Aggression and Reduces Helpfulness” as the title of one of hese papers puts it.
In his article (free pdf), British ‘independent researcher’ James B. Miles says that these experiments are flawed, because they didn’t distinguish between determinism (lack of free choice) and fatalism (lack of the ability to change events).
More fundamentally, though, Miles says that free will is used to justify things, such as punishment and poverty, that would otherwise be seen as scandalous…” (via Neuroskeptic).