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Psychological Study: Guilt Judgments based on Attractiveness and Facial Expression, Assignments of Psychology

A research study in which participants were asked to judge the guilt of individuals depicted in photographs based on their attractiveness and facial expression. The study design involves manipulating two independent variables: attractiveness (rated as attractive or unattractive) and facial expression (smiling or not smiling). Participants were asked to rate the guilt of the individuals using a likert scale. Figures with means graphed and requires the calculation and labeling of marginal means, as well as verbal conclusions for each figure.

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Pre 2010

Uploaded on 02/12/2009

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PSYC 202 – Psychological Research II Homework Assignment #___
DUE: 2 x 2 Research Design
The experimenters were interested in the characteristics of a person that influence judgments of guilt
when that person is accused of a crime. They hypothesized that an alleged criminals’ attractiveness and facial
expression may influence the judge’s opinion concerning their level of guilt. Participants read a description of
an alleged crime accompanied by a photograph of the person who was supposed to have committed the crime.
The photographs that were used had been rated by independent judges as to the attractiveness of the person in
each photo, and only those photos ranked as attractive and those photos ranked as unattractive were used. In
addition, the photo depicted a person smiling or not smiling. After the participant read the description of the
alleged crime, each then judged how likely it was that the person in the photo committed the crime. A Likert-
type scale was used for the judgment responses (1 = innocent, 2 = not likely to be guilty, 3 = maybe
guilty/maybe not, 4 = very likely to be guilty, and 5 = guilty).
What is the design of the study (for each independent variable)?
A different possible result is graphed in each of Figures 1, 2, and 3 below. Transfer the means that are graphed
into the appropriate cells of the table for each. Calculate and fill in the marginal means. Make sure you label it
correctly (with the independent variable and the levels of each). Then write a verbal conclusion that describes
the results in that Figure appropriately. (For eyeball analyses, assume a difference of 1.5 is significant.)
Verbal Conclusion:
Figure 1
0
1
2
3
4
5
A1 A2
Guilt Judg ement
B1
B2
A1 A2
B1
B2
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PSYC 202 – Psychological Research II Homework Assignment #___

DUE: 2 x 2 Research Design

The experimenters were interested in the characteristics of a person that influence judgments of guilt

when that person is accused of a crime. They hypothesized that an alleged criminals’ attractiveness and facial

expression may influence the judge’s opinion concerning their level of guilt. Participants read a description of

an alleged crime accompanied by a photograph of the person who was supposed to have committed the crime.

The photographs that were used had been rated by independent judges as to the attractiveness of the person in

each photo, and only those photos ranked as attractive and those photos ranked as unattractive were used. In

addition, the photo depicted a person smiling or not smiling. After the participant read the description of the

alleged crime, each then judged how likely it was that the person in the photo committed the crime. A Likert-

type scale was used for the judgment responses (1 = innocent, 2 = not likely to be guilty, 3 = maybe

guilty/maybe not, 4 = very likely to be guilty, and 5 = guilty).

What is the design of the study (for each independent variable)?

A different possible result is graphed in each of Figures 1, 2, and 3 below. Transfer the means that are graphed

into the appropriate cells of the table for each. Calculate and fill in the marginal means. Make sure you label it

correctly (with the independent variable and the levels of each). Then write a verbal conclusion that describes

the results in that Figure appropriately. (For eyeball analyses, assume a difference of 1.5 is significant.)

Verbal Conclusion :

Figure 1 0

A1 A

Guilt Judgement

B

B

A1 A

B

B

Verbal Conclusion:

Figure 2 0

A1 A

Guilt Judgement

B

B

A1 A

B

B

Verbal Conclusion :

Figure 3 0

A1 A

Guilt Judgement

B

B

A1 A

B

B