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(Solved) A researcher carries out a study to examine the correlates of tendency towards Bullying Behavior (BB) in adolescent youths. The dependent variable...


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1. A researcher carries out a study to examine the correlates of tendency towards Bullying
Behavior (BB) in adolescent youths. The dependent variable is Bullying Behavior (BB),
measured using a scale developed for this purpose and included history of violent behavior
towards peers and teachers. The data are in SPSS file: FINAL2017PROB5DATA.SAV.
The independent/control variables were:
Ethnicity (labelled 1, 2, 3 – ethnicity is deliberately not identified to avoid
stereotyping);
Gender (labelled 1, 2 - gender is not identified for the same reason as for ethnicity),
X1 – measure of Home Environment based on such variables as attitude towards
violence, Gang Membership, Drug Usage, Spouse and Child abuse etc.
X2 – measure of antisocial behavior.
(i) Complete the following table: Variable Type
(Continuous/Ca
tegorical) Dummy Variables
Needed?
Yes/ No # of
Dummy
Variables Coding Scheme (indicate what coding scheme you
will use where applicable; if not applicable,
indicate as NA) X1
X2
Ethnicity
Gender (i) The researcher hypothesizes that BB is related to ethnicity. Write the regression
model for relating BB to ethnicity. Analyze the data in SPSS. Determine the
proportion of variance in BB that can be explained from ethnicity. Is this
significant? What is the implication of this result for predicting BB, i.e., can BB
be predicted from ethnicity? Read parts (ii) – (iv) first so that you can minimize your work by entering the variables in
blocks.
(ii) Determine the proportion of variance in BB explained by X1 and X2. Is this
significant? (Note: This is a model that involves only X1 and X2. Do not include
Ethnicity) (iii) Determine the proportion of variance explained by X1, X2, and Gender. By
comparing this with that you obtained in (iii), determine the percent of variance that
is additionally explained by Gender. Does gender contribute significantly to
prediction after controlling for/adjusting for X1, and X2? (iv) Determine the proportion of variance in BB explained by X1, X2, Gender, and
Ethnicity. By comparing this with that you obtained in (iv), determine the percent of
variance is additionally explained by Ethnicity? Does ethnicity contribute
significantly to prediction over and above X1, X2, and Gender? (v) What is the prediction equation for predicting BB from x1, x2, Gender, and
Ethnicity? What is predicted BB for a student who is from Ethnic Group 3, Gender 1,
and whose scores on X1=20, and X2=60? (vi) What causal inferences can you draw regarding the cause of BB behavior in this
study? By referring to Part (vii), explain how the results of the study can be useful.

 


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