PSYC 212 Lecture Notes - Lecture 2: Green, False Alarm, Psychometric Function
14 Sep 2017
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Document Summary
Modern psychophysics & signal detection theory: by thinking about our own sensations and perceptions and then expressing these observations, we can measure our psyche- sense of conscious self (false) Fechner"s law: relate the magnitude of sensation to the stimulus intensity using. It yields an x number of differences (logarithmic function) Fechner had to assume that measuring relative threshold that are crossed (threshold- People are remarkably comparable in judging the sensory magnitude of their experience. Trouble is, the magnitude of their sesnoru experience most often does not follow a logrithimic curve so fechner was wrong. How societies perception of a global factor scales with severity of the factor (crime, Some sensations can follow a exponential law (like electric shock) If you feel something is loud and you measure the jnd, the sensory change is bigger to you (a bigger change then what you got at the lower end)
