The experience shows the evaluative judgements obtained through perceptive testing may contain unintended preferences made by listeners with no apparent motivation.An advantage for additional interpretation adjustments is if a general trend in such a distortion and its main direction can be detected. In experiments devoted to finding out sound qualities that motivate the Czech listener to dividing a syllable chain into stress units (phonetic words) in a given manner, some listeners tend to choose one of .the two possible variants with higher probability with no apparent motivation. Results from experiment presented in the contribution allow to assume that the tendency to prefer, in the 5-syllable sequence segmentation, a 3:2 chain of syllables over a 2:3 chain is possibly a prevalent listening preference in Czech.