Dear listers,
I am writing to get some help regarding the relatioinship among variables.
I have two independent variables (A and B) and a dependent variable (C).
A
C
B
Theoretically, A has a negative effect on C and B has a positive effect on C. Also, A has a negative effect on B.
Without path from A to B, each effects appear to be as expected.
However, if I add a path from A to B which is negative, then the path from A to C becomes positive, which is theoretically assumed to be negative.
How can I understand this?
Any comments will be appreicated.
MCHA.
____________________________________________________________
Tired of all the SPAM in your inbox? Switch to LYCOS MAIL PLUS
http://www.mail.lycos.com/brandPage.shtml?pageId=plus
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
