SENSATION AND PERCEPTION
BASIC CONCEPTS OF SENSATION AND PERCEPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The smallest change in stimulation that can be detected 50 percent of the time
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The principle that there is an adjustment of sensation levels depending on the stimulation received
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The principle that the just-noticeable difference for any given sense is a constant proportion of the stimulation being judged
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The idea that the least amount of energy detected in a stimulation only occurs 50 percent of the time
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Detailed explanation-1: -The principle that the just-noticeable difference for any given sense is a constant proportion of the stimulation being judged.
Detailed explanation-2: -Just-Noticeable Difference (JND)-the smallest amount that something has to change in order for the difference to be detected 50% of the time. Also known as a difference threshold. Weber’s Law-the size of the JND is a constant proportion to the original stimulus magnitude.
Detailed explanation-3: -According to Weber’s law, a fundamental principle of perception, sensitivity to changes in magnitude along a given physical dimension decreases when stimulus magnitude increases.
Detailed explanation-4: -Weber’s Law states that rather than a constant, absolute amount of change, there must be a constant percentage change for two stimuli to be perceived as different. In other words, the higher the intensity of a stimulus, the more it will need to change so we can notice a difference.
Detailed explanation-5: -According to Weber’s law, the just noticeable difference increases in proportion to the total intensity of the stimulus. Research has found that stimuli can influence behaviour even when they are presented below the absolute threshold (i.e., subliminally).