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Study Question Study Question What advantages do modern psychophysical What advantages do modern psychophysical methods (e.g., TSD- -based measures) offer based measures) offer methods (e.g., TSD over the classical methods? What are their

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What advantages do modern psychophysical What advantages do modern psychophysical methods (e.g., TSD methods (e.g., TSD-

  • based measures) offer

based measures) offer

  • ver the classical methods? What are their
  • ver the classical methods? What are their

disadvantages, if any? disadvantages, if any?

Study Question Study Question

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The Sensory Threshold Concept The Sensory Threshold Concept

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Classical Psychophysics Classical Psychophysics

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Difference Thresholds or Just Difference Thresholds or Just Noticeable Differences ( Noticeable Differences (JNDs JNDs) )

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Weber’s Law: ΔI / I = k

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Theory of Signal Detection Theory of Signal Detection

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Modern Forced Modern Forced-

  • Choice

Choice Psychophysical Methods Psychophysical Methods

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Psychophysical Scaling Psychophysical Scaling

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Stevens’ Power Law: P=kSn

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