Simple reaction time test, v.2.4 Reference: Flegr, J., Novotná, M., Lindová, J. & Havlícek, J. Neurophysiological effect of the Rh factor. Protective role of the RhD molecule against Toxoplasma-induced impairment of reaction times in women. Neuroendocrinology Letters 29:475-481, 2008. A yellow square (1 x 1 cm) appeares in a yellow frame (3 x 3 cm) at the centre of a black computer display at irregular intervals ranging from 1 to 8 sec. The subject had to respond to the square immediately after it appeared on the display by pressing ENTER. The computer measures and records reaction times in each trial and calculated the mean reaction times from all those recorded during each of period (set) of the test. Files: Reakcni_cas.exe (program file) reak1.rtf (contents of the 1st screen, i.e. instructions for a proband) prestavka.rtf (contents of the 2nd screen, i.e. test displayed after three trials, before real data collection starts) konec.rtf (contents of the last screen ""End of the test") program.txt (configuration file) reak_cas.DBF (output file with a subject's identification, date of the test, mean reaction times in particular set of stimuli, number of premature responses, and individual responses in all series of the test. e.g.: 2 5 4 77 prestavka.rtf 4 5 6 2 6 2 4 3 1 88 konec.rtf 2 3 4 line 1-3: delay of the first, second and third trial-stimulus (in seconds, should be 1-8 seconds) line 4: name of the file with contents of the 2nd screen lines 5-13: delays of stimuli line 14: line 4: name of the file with contents of the 3rd screen lines 15,16,17 etc numbers of stimuli in particular set of the experiments. The mean reaction times are computed and recorded for each set.