Thresholds
Psychology ⇒ Sensation and Perception
Thresholds starts at 10 and continues till grade 12.
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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.
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 person is exposed to a series of tones at increasing volumes. The lowest volume at which they report hearing the tone 50% of the time is their ________ threshold.
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?
Which of the following best defines the terminal threshold? (1) The maximum intensity of a stimulus that can be detected, (2) The minimum intensity of a stimulus that can be detected, (3) The smallest change in a stimulus that can be detected, (4) The point at which a stimulus is no longer detected
Which of the following best describes the difference threshold? (1) The minimum intensity of a stimulus that can be detected, (2) The smallest change in a stimulus that can be detected, (3) The maximum intensity of a stimulus, (4) The average intensity of a stimulus
Which of the following best illustrates a difference threshold? (1) Detecting a faint perfume in a room, (2) Noticing when the volume of music increases slightly, (3) Seeing a candle flame in the dark, (4) Hearing a loud noise
Which of the following is an example of an absolute threshold? (1) Noticing the difference between two shades of blue, (2) Detecting a candle flame 30 miles away on a clear night, (3) Feeling the difference between a 1kg and 2kg weight, (4) Hearing your name in a noisy room
A person is exposed to a series of tones at increasing volumes. The lowest volume at which they report hearing the tone 50% of the time is their ________ threshold.
Fill in the blank: According to Weber's Law, the ratio of the difference threshold to the original stimulus intensity is ________.
Fill in the blank: The ________ threshold is the point at which a stimulus goes from undetectable to detectable to our senses.
Fill in the blank: The difference threshold is also known as the ________ difference.
If the absolute threshold for tasting sugar is 1 gram per liter of water, will a solution with 0.5 grams per liter be detected? (Yes/No)
True or False: A stimulus that is detected less than 50% of the time is considered below the absolute threshold.
True or False: Sensory thresholds can be influenced by psychological factors such as expectations and attention.
True or False: The absolute threshold can change depending on factors such as fatigue, attention, and expectations.
