AMPLITUDE By N., Sam M.S. - 94 noun. 1. the size of a stimulant or reaction. 2. the highest worth of a sinusoid wave. AMPLITUDE: "The amplitude of the results was far stronger than anyone expected." Related Psychology Terms BRAIN WAVES (Electroencephalogram, EEG) HEARING (AUDITION) REACTION TIME (Response Latency) PSYCHOPHYSIOLOGIC DISORDERS (GENERAL) DEFENSE MECHANISM (Ego Defense Mechanism) STARTLE REACTION (Startle Pattern) AMPLITUDE OF LIGHT WAVE CHILD PSYCHIATRY DISCIPLINE (literally, “to learn”) SPIKE-AND-WAVE DISCHARGES Cite this page: N., Sam M.S., "AMPLITUDE," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/amplitude/ (accessed September 30, 2022).