Thresholds
Psychology ⇒ Sensation and Perception
Thresholds starts at 10 and continues till grade 12.
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See sample questions for grade 12
A participant is exposed to two lights, one at 100 units of brightness and another at 105 units. If they can just notice the difference, what is the Weber fraction?
A researcher finds that a participant can detect a sound at 20 decibels 50% of the time. What is the participant's absolute threshold for that sound?
According to Weber's Law, if the just noticeable difference for a 50g weight is 2g, what would it be for a 100g weight?
Describe how adaptation can affect sensory thresholds.
Describe how the concept of threshold applies to taste perception.
Describe the term 'subliminal stimulus' in relation to thresholds.
Explain how signal detection theory differs from the concept of absolute threshold.
Explain Weber's Law in the context of difference thresholds.
Explain why the absolute threshold is usually defined as the intensity detected 50% of the time.
Explain why thresholds are important in the study of sensation and perception.
If a person can detect a 0.2g difference in a 10g weight, what is the Weber fraction?
If a person can detect a 1% change in the weight of an object, what is the just noticeable difference for a 300g object?
If a person can just notice the difference between a 100g and a 105g weight, according to Weber's Law, what is the just noticeable difference for a 200g weight?
The minimum amount of sugar that must be added to a cup of coffee before you notice it tastes sweeter is an example of which threshold?
What is the absolute threshold in sensation and perception?
What is the main difference between the absolute threshold and the difference threshold?
What is the term for a stimulus that is below the absolute threshold?
Which threshold is being tested when a researcher gradually increases the brightness of a light until a participant reports seeing it?
Which threshold is most relevant when determining if a person can tell the difference between two similar musical notes?
