PSYCHOPHYSICAL SCALING AND STRENGTH OF NE RVOUS-SYSTEM IN TEENAGERS

Individual differences in strength of the nervous system, subjective j udgments on tone loudness (40-120 dB), auditory and vibrating sensitiv ities were studied in 15 yrs children. Two modes of scaling were used: (1) Stevens method of direct numerical estimation using averaged stan dard tone 30 dB scored as 10: (2) estimation in terms of emotions (irr elevant, pleasant, unpleasant, painful, intolerable). Strength of the nervous system was assessed by means of slope of dependence between re action time and tone intensity (SofRT). The correlation between subjec tive judgment characteristics and strength of the nervous system was f ound: reduced estimates of low intensity tones, augmented estimates of high intensity tones as well as more pronounced SofRT in Ss with stro ng nervous system in comparison with Ss with weak nervous system, The correlation of absolute auditory and vibrating thresholds with SofRT w as insignificant.