And how do you know if the individual is "really" free? This is a philosophical question, and as such, can't really be answered experimentally. At the risk of

And how do you know if the individual is "really" free? This is a philosophical question, and as such, can't really be answered experimentally. At the risk of sounding sophistical and clintonian, it depends on what you mean by "'really' free". You can be controlled by environmental factors and still exercise free will by some definitions of that term.