A peripheral device for supporting psychological examinations, characterised in that an element to monitor a response at conducting a psychological test comprises at least 10 transparent buttons (2), LED illumination (3), is provided with a piezoelectric sensor (4) and a sensor to register cardiac activity (11), being together indicators of psycho-physiological state. The control of illumination of a defined number of buttons (2) by means of the LED diodes (3) is a sliding multi-position switch (4) connected with a microprocessor unit (6). Particular piezoelectric elements (5) are active only when particular LED diodes (3) are illuminated. The data are stored in an internal memory (8) of the device with the possibility to send the data to the computer wireless. The device uses a Bluetooth interface (7) to communicate with the own periferal devices.