[Some aspects of cognitive activities in schizophrenic patient (author's transl)].

Nine paranoid schizophrenics, five control subjects of the same age and four hebephrenic schizophrenics were examined using Piaget's genetic psychology tests. The study of assimilation/accommodation equilibrium in the cognitive activities of schizophrenic patients confirmed our previous results which primarily dealt with hebephrenic patients [12]. The thinking of paranoid schizophrenics is dominated by increased assimilation which explains their tendency to deform observables and their difficulty in generalising reasoning. The assimilation/accommodation equilibrium of their logical operations is affected resulting in: a) difficulty in formulating reflecting abstractions and therefore the comprehension and extension of concepts; b) loss the feeling for logical necessity and a tendency to utilize magical thinking and subjective explanations.