PERFORMANCE ON A FIVE-FINGER CHORD KEYBOARD.
Discrimination Reaction Times (DRTs) were examined for each of the 31 chords possible with a 5-finger chord keyboard. Each of 4 paid Ss showed marked improvement in performance over 4000 to 11,000 DRTs on the 31-chord task despite extensive prior practice on subsets of the 31 chords. DRTs between .3...
| Publicado en: | Journal of Applied Psychology Vol. 46; no. 3; pp. 165 - 170 |
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| Autor principal: | |
| Formato: | Artículo |
| Publicado: |
American Psychological Association
Jun62
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| Sumario: | Discrimination Reaction Times (DRTs) were examined for each of the 31 chords possible with a 5-finger chord keyboard. Each of 4 paid Ss showed marked improvement in performance over 4000 to 11,000 DRTs on the 31-chord task despite extensive prior practice on subsets of the 31 chords. DRTs between .30 and .35 sec. were obtained for the average of all 31 chords. Information transmitted from stimulus to keyboard was greater than 4.25 bits. In terms of average DRTs, the relative difficulties of the 31 chords were very similar for the 4 Ss. The percentage of error for each of the chords was highly correlated with the DRTs. |
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