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parto123

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Dec 25, 2006
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Hey stats people-

im running a multiple regression with certain ocean personality characteristics as predictor variables and a parenting scale as the dependent variable.

if i wanted to do either of the following, what is the best way to do so (on spss):

1) control for gender and race demographics- (hierarchical regression?)
2) see how these demographics moderate (or interact, or whatever the kids are calling it these days) the relationship between the personality and parenting variables.

Thanks
 

cmuhooligan

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Jan 15, 2005
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Hey stats people-

im running a multiple regression with certain ocean personality characteristics as predictor variables and a parenting scale as the dependent variable.

if i wanted to do either of the following, what is the best way to do so (on spss):

1) control for gender and race demographics- (hierarchical regression?)
2) see how these demographics moderate (or interact, or whatever the kids are calling it these days) the relationship between the personality and parenting variables.

Thanks

1.) I would enter your control variables in the first step of a hierarchical regression, and then in the second step enter in your predictors.
2.) To test for interactions (i.e., moderators) you would need to create interaction terms (e.g., genderXopenness). Then you would enter your main effects (e.g., gender, race, predictor variables) into the first step, and then put your 2-way interactions into the second step.
 

blindblonde

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Jan 21, 2007
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1) I don't necessarily see the need for putting the control variables in Step 1. I think it would be important to see if the personality variable predicts the dependent variable at all in Step 1. You can then add the additional controlling variables to see the beta coefficients for the personality variables decrease with the other controlling variables. You can also look at the change in R-squared to see if the control variables add anything beyond the personality variables. I mean, either way works (this is a rather picky point). It just depends on how you want to look at the research question--do you want to know the effect of the predictor before you control for these variables or after you control for these other variables?

2) Already addressed. :)
 
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cmuhooligan

10+ Year Member
Jan 15, 2005
312
2
San Diego
Status (Visible)
  1. Psychologist
Hey stats people-

im running a multiple regression with certain ocean personality characteristics as predictor variables and a parenting scale as the dependent variable.

if i wanted to do either of the following, what is the best way to do so (on spss):

1) control for gender and race demographics- (hierarchical regression?)
2) see how these demographics moderate (or interact, or whatever the kids are calling it these days) the relationship between the personality and parenting variables.

Thanks

I should also mention that if you are going to explore possible interactions, it is important that you center your interaction variables (to protect from possible multicolliniarity).
 

parto123

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Dec 25, 2006
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1.) I would enter your control variables in the first step of a hierarchical regression, and then in the second step enter in your predictors.
2.) To test for interactions (i.e., moderators) you would need to create interaction terms (e.g., genderXopenness). Then you would enter your main effects (e.g., gender, race, predictor variables) into the first step, and then put your 2-way interactions into the second step.

Thank you. This was helpful
 

parto123

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Dec 25, 2006
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Thanks for all the responses.

A few more questions:

1) To enter the ethnicity moderator into this regression, how would I code that. I have 4 groups (can this be done?)

2) How about for Gender (0,1?)

3) if I decide to go with performing just correlations instead of regressions, would I use a partial correlation for the gender/ethnicity moderation, or can I do interaction terms in correlation as well?

Thanks
 
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