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Questions and Answers
What does Weber's Law state?
What does Weber's Law state?
- Sensation is independent of stimulus intensity.
- The absolute threshold varies for different senses.
- The difference threshold is the same for all stimuli.
- Two stimuli must differ by a constant proportion for the difference to be perceptible. (correct)
What is the definition of Absolute Threshold?
What is the definition of Absolute Threshold?
The minimum stimulus intensity required to activate a sensory receptor 50% of the time.
What does Difference Threshold (JND) refer to?
What does Difference Threshold (JND) refer to?
The minimum noticeable difference between any two sensory stimuli 50% of the time.
What is Signal Detection Theory?
What is Signal Detection Theory?
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Study Notes
Weber's Law
- States that the perception of difference between stimuli depends on a constant proportion.
- This law emphasizes the necessity of proportionate differences for noticeable change in stimuli.
Absolute Threshold
- Refers to the lowest intensity of a stimulus needed for detection 50% of the time.
- Crucial in understanding sensory processing, as it establishes a baseline for detecting sensations.
Difference Threshold (Just Noticeable Difference - JND)
- Defines the smallest detectable difference between two stimuli 50% of the time.
- Important for analyzing perception and how sensory information is compared and differentiated.
Signal Detection Theory
- A framework that explains how individuals discern a stimulus amidst distractions.
- Evaluates both the sensitivity to stimuli and the decision-making processes influencing detection.
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