Individual Review Homework #1_for students (1)

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University of Illinois, Urbana Champaign *

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230

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Psychology

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Dec 6, 2023

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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. 1.2 x axis, y axis 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. As the physical intensity is increasing, the perceptual intensity is increasing as well by 1. 1

Psyc230 2. Figure 2. 2.1. (1pt) Write all the relevant terminology and definitions associated with the Figure above. the x axis and the y axis 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. When the perceptual intensity increases by one, the physical intensity increase by one as well. When the perceptual intensity increases by two, the physical intensity does as well. When the perceptual intensity increases by three, the physical intensity increase by three but the gap between 2 and 3 is bigger on the x axis. 3. Figure 3. 3.1 (1pt) Write all the relevant terminology and definitions associated with the Figure above. the x axis and the y axis 3.2 (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 2

Psyc230 with the physical intensity on the X axis when you move from 0 to 1 to 2 in the Y axis. When the y axis increases by one, so does the x axis. When the y xis increases by two, the x axis increases by half a point. Review of the different psychophysical methods a. Methods of Limits. Check what applies. (1pt) ❏ Random presentation of stimuli ❏ Orderly presentation of stimuli (ascending blocks and descending blocks) ❏ Participants directly control the stimulus level ❏ Experimenter/Computer controls the stimulus level, not the participant ❏ Participants press a button when they detect the stimulus ❏ Participants press a button when they stop detecting the stimulus ❏ Participants give a value to estimate the magnitude of their experience when confronted with the stimulus b. Methods of Constant stimuli. Check what applies . (1pt) ❏ Random presentation of stimuli ❏ Orderly presentation of stimuli (ascending blocks and descending blocks) ❏ Participants directly control the stimulus level ❏ Experimenter/Computer controls the stimulus level, not the participant ❏ Participants press a button when they detect the stimulus ❏ Participants press a button when they stop detecting the stimulus ❏ Participants give a value to estimate the magnitude of their experience when confronted with the stimulus c. Method of Adjustment. Check what applies . (1pt) ❏ Random presentation of stimuli ❏ Orderly presentation of stimuli (ascending blocks and descending blocks) ❏ Participants directly control the stimulus level ❏ Experimenter/Computer controls the stimulus level, not the participant ❏ Participants press a button when they detect the stimulus ❏ Participants press a button when they stop detecting the stimulus ❏ Participants give a value to estimate the magnitude of their experience when confronted with the stimulus d. Magnitude Estimation method. Check what applies . (1pt) ❏ Random presentation of stimuli ❏ Orderly presentation of stimuli (ascending blocks and descending blocks) ❏ Participants directly control the stimulus level ❏ Experimenter/Computer controls the stimulus level, not the participant ❏ Participants press a button when they detect the stimulus ❏ Participants press a button when they stop detecting the stimulus ❏ Participants give a value to estimate the magnitude of their experience when confronted with the stimulus 3

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