Chapter 5 -Page 150
- Created by: Holly Thurston
- Created on: 18-07-16 12:51
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- Psychophysics
- Psychophysics is the systematic study of the relation between the physical characteristics of stimuli and the sensations they produce (the 'physics of the mind')
- The principle of the just-noticeable difference
- Ernst Weber (1795-1878), a German anatomist and physiologist, investigated the ability of humans to discriminate between various stimuli
- He measured the just-noticeable difference (jnd) - the smallest change in the magnitude of a stimulus that a person can detect.
- Ernst Weber (1795-1878), a German anatomist and physiologist, investigated the ability of humans to discriminate between various stimuli
- Signal detection theory
- Psychophysical methods rely heavily on the concept of a threshold, the line between not perceiving an d perceiving.
- The just-noticeable difference can also be called a difference threshold, the minimum detectable difference between two stimuli
- Psychophysical methods rely heavily on the concept of a threshold, the line between not perceiving an d perceiving.
- To study perceptual phenomena, scientists had to find reliable ways to measure people's sensations.
- Two of these methods are the just-noticeable difference and the procedures of signal detection theory
- The principle of the just-noticeable difference
- Ernst Weber (1795-1878), a German anatomist and physiologist, investigated the ability of humans to discriminate between various stimuli
- He measured the just-noticeable difference (jnd) - the smallest change in the magnitude of a stimulus that a person can detect.
- Ernst Weber (1795-1878), a German anatomist and physiologist, investigated the ability of humans to discriminate between various stimuli
- Signal detection theory
- Psychophysical methods rely heavily on the concept of a threshold, the line between not perceiving an d perceiving.
- The just-noticeable difference can also be called a difference threshold, the minimum detectable difference between two stimuli
- Psychophysical methods rely heavily on the concept of a threshold, the line between not perceiving an d perceiving.
- The principle of the just-noticeable difference
- Two of these methods are the just-noticeable difference and the procedures of signal detection theory
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