may 6, 1839 - Brass Instrument Psychological Test Era
--} psychologist/psychiatrist use brass instrument to measure behavior
* time measurement
(chronoscope, chronograph, kymographs)
* time production instruments
(pendulums, gravity fall devices, clocwork
makers, multiple interval timers)
* response devices
(Morse telegraphic key, lip keys, voice keys)
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Timeline of the Development of Psychology
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