A computer-controlled system is configured to: (a) provide prediction model(s) for prediction of mental/emotional state of a user. The prediction model(s) are at least one of: first model(s) based on non-physiological data gathered from a first group of users and second model(s) based on physiological data gathered from a second group of users. The prediction model constitutes a set of models. (b) Receive data of a tested user. (c) Associate at least one model of the set of models to the tested user, constituting an associated prediction model, based at least on a highest rank of user state predictability of the associated prediction model compared to a rank of user state predictability of other models of the set of models. The associated prediction model is usable to facilitate predicting emotional/mental state of the tested user.
METHOD AND SYSTEM OF MODELLING A MENTAL/ EMOTIONAL STATE OF A USER