[Psychological examinations in dialysed patients (author's transl)].

Psychological achievement tests were applied to 27 chronic dialysis patients two times, firstly just before being connected with the hemodialyser early in the morning, and then 24 h later. - Regarding basic intelligence functions like reasoning, closure, and a verbal factor concerning general knowledge the patients, neither before dialysis nor 24 h later, showed any significant differences compared to the healthy population. -On the contrary, attention performances, faculty of mental concentration, and reaction speed were definitely diminished in the morning following the treatment, whereas directly before starting hemodialysis there were no specific deviations from the control groups.