in regards to schizophrenia, the undertaking of changing abstract notions directly into definite delineations or models. For instance, a person afflicted with paranoid schizophrenia that suffers from emotions which make them feel as though the entire planet is dangerous might become convinced in the future that members of their community are really attempting to hurt them. If this someone consequently starts to have particular sensory activity experiences which promote this belief, like audile illusions of intimidating comments spoken by community members, perception of the notion will then have happened- this is the highest stage of active concretization. Italian-born U.S. psychiatrist Silvano Arieti
ACTIVE CONCRETIZATION: “The active concretization element of Carol’s schizophrenia led her believe more inanimate objects were speaking to her than her son’s stuffed rabbit, as previously believed.”