Individual Review Homework #1_for students

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Psychology

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Apr 3, 2024

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Psyc230 Individual Review Homework #1 (Units 1 and 2): total points: 10 pts Please use your notes and slides for this activity. You should first provide your own answers to the homework (using your own words). After the homework submission deadline, you will be able to access the solution to the homework. Please use it to verify your answers. They are provided to help you learn the material and study for the exam. Note, the answer provided does not necessarily contain all the relevant information. There are a total of 9 homework and they will count for 15% of the final grade . Relationship between physical intensity and perceptual intensity. 1. Figure 1. 1.1 (1pt) Write all the relevant terminology and definitions associated with the Figure above. Magnitude estimation: participants judge and assign numerical estimates to the perceived strength of a stimulus. Physical intensity: how long the bar is on the graph in regards to the stimuli Perceptual intensity: how the participant is experiencing the stimulus 1.2 (1pt) Using your own words, please find an example to describe the relationship between the physical intensity of the stimulus and the perceptual intensity. In particular, try to explain what happens with the physical intensity on the X axis when you move from 0 to 1 to 2 in the Y axis. We hit the participants’ hand. When we don’t hit, the participants feels nothing. When we hit once, they feel one hit. When we give 2 hits, they feel 2 hits. The participants feels the same amount of hits that we have gave them. 1

Psyc230 2. Figure 2. 2.1. (1pt) Write all the relevant terminology and definitions associated with the Figure above. Fechner’s law: sensation is a logarithmic function of physical intensity. Response compression: Physical intensity grows at a lower rate than perceptual intensity. Physical intensity: how long the bar is on the graph in regards to the stimuli Perceptual intensity: how the participant is experiencing the stimulus 2.2 ( 1pt) Using your own words, please find an example to describe the relationship between the physical intensity of the stimulus and the perceptual intensity. In particular, try to explain what happens with the physical intensity on the X axis when you move from 0 to 1 to 2 in the Y axis. The perfume concentration in a room. As we increase the amount of perfume in the room, the participants will have perceptual intensity increase less. When we put one drop of perfume, the participants can smell the perfume. When we add another drop, the participants can smell that the perfume concentration got higher. 3. Figure 3. 2

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