  Quantum cognition is an emerging field making uses of quantum theory to model
cognitive phenomena which cannot be explained by classical theories. Usually,
in cognitive tests, subjects are asked to give a response to a question, but in
this paper, we just observed the subjects' behaviour and the question and
answer method was not applied in order to prevent any mental background on
participants' minds. Finally, we examined the experimental data on Hardy's
non-locality argument (HNA), and we noticed the violation of HNA in human
behaviour.
