<Li> In quantum mechanics and Gestalt perception objects have to be created by elimination of holistic correlations with the' rest of the world' ." </Li> <P> Amann comments: "The structural similarities between Gestalt perception and quantum mechanics are on a level of a parable, but even parables can teach us something, for example, that quantum mechanics is more than just production of numerical results or that the Gestalt concept is more than just a silly idea, incompatible with atomistic conceptions ." </P> <P> The assumption that information processing by the agents of the market follows the laws of quantum information theory and quantum probability was actively explored by many authors, e.g., E. Haven, O. Choustova, A. Khrennikov, see the book of E. Haven and A. Khrennikov, for detailed bibliography . We can mention, e.g., the Bohmian model of dynamics of prices of shares in which the quantum (- like) potential is generated by expectations of agents of the financial market and, hence, it has the mental nature . This approach can be used to model real financial data, see the book of E. Haven and A. Khrennikov (2012). </P> <P> An isolated quantum system is an idealized theoretical entity . In reality interactions with environment have to be taken into account . This is the subject of theory of open quantum systems . Cognition is also fundamentally contextual . The brain is a kind of (self -) observer which makes context dependent decisions . Mental environment plays a crucial role in information processing . Therefore, it is natural to apply theory of open quantum systems to describe the process of decision making as the result of quantum - like dynamics of the mental state of a system interacting with an environment . The description of the process of decision making is mathematically equivalent to the description of the process of decoherence . This idea was explored in a series of works of the multidisciplinary group of researchers at Tokyo University of Science . </P>

Quantum cognition a new theoretical approach to psychology