Thresholds
Psychology ⇒ Sensation and Perception
Thresholds starts at 10 and continues till grade 12.
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See sample questions for grade 10
A researcher increases the volume of a tone until a participant reports hearing it. What threshold is being measured?
Describe how background noise can affect a person's absolute threshold for hearing.
Describe how thresholds are measured in psychological experiments.
Describe one factor that can influence a person's absolute threshold.
A person can detect a 2% change in the weight of an object. If the object weighs 200g, what is the JND?
A person can detect a difference between 100g and 105g, but not between 100g and 104g. What is the JND for this person at 100g?
A person can just notice the difference between 50g and 52g. What is the Weber fraction for this person?
A researcher increases the volume of a tone until a participant reports hearing it. What threshold is being measured?
Which law states that the size of the just noticeable difference is a constant proportion of the original stimulus? (1) Weber's Law, (2) Fechner's Law, (3) Stevens' Power Law, (4) Newton's Law
Which of the following best describes the difference threshold? (1) The smallest change in stimulation that can be detected, (2) The maximum amount of stimulation a person can detect, (3) The minimum amount of stimulation needed to detect a stimulus, (4) The average amount of stimulation detected by most people
Which of the following best explains why thresholds are important in psychology? (1) They help us understand how we sense and perceive the world, (2) They determine intelligence, (3) They measure memory, (4) They predict emotions
Which of the following is an example of a difference threshold? (1) Hearing a sound in a silent room, (2) Noticing the difference between two similar shades of blue, (3) Smelling a flower for the first time, (4) Seeing a light in the dark
Fill in the blank: According to Weber's Law, the JND is a ________ proportion of the original stimulus.
Fill in the blank: The ________ threshold is the minimum change in stimulation required to detect a difference between two stimuli.
Fill in the blank: The ________ threshold refers to the lowest level of a stimulus that can be detected.
Fill in the blank: The just noticeable difference is also called the ________ threshold.
True or False: Sensory thresholds can be influenced by expectations and prior experience.
True or False: The absolute threshold for taste is the same for all types of food.
True or False: The absolute threshold is the same for all people.
True or False: The difference threshold is also known as the just noticeable difference (JND).
