Dr. Bellus wants to study how people's perception of attractiveness is affected by the gender of...

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Advance Math

Dr. Bellus wants to study how people's perception ofattractiveness is affected by the gender of the subjects, and thefacial expression of the object. Each participant views sixheadshots (in random order) of the same person, who demonstratesdifferent facial expressions (joy, surprise, fear, anger, sadness,and disgust) in each picture. The participants are then asked torate the attractiveness level of each picture. The rating is thedependent variable. Below is the selected output of a two-factorsplit plot ANOVA.
Source
Type III SS
DF
MS
F
Between subjects
A
226.81
1
226.81
3.04
S
2084.61
28
74.45
Within Subjects
B
18802.53
5
3760.506
38.07
AB
324.22
5
64.84
0.66
BS
13829.70
140
98.78
(a) Identify the between-subjects factor and within-subjectsfactor.
(b) Are the effects significant (? = .05)? What do these resultstell us about people's perception of attractiveness?
(c) Is MCP necessary? If so, which effect(s) should we conductMCP on?

Answer & Explanation Solved by verified expert

4.2 Ratings (718 Votes)

a To identify the factors we can take some clues from the ANOVAtable Lets do this for the betweensubjects factorThe first clue is that the degrees of freedom DF of the factorwill be equal to the number of different characteristics or valuesthis can take We See Answer

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Source	Type III SS	DF	MS	F
Between subjects
A	226.81	1	226.81	3.04
S	2084.61	28	74.45

Within Subjects
B	18802.53	5	3760.506	38.07
A*B	324.22	5	64.84	0.66
B*S	13829.70	140	98.78