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what does correlation between two beta coefficients mean?

I am now trying to use PRODCLIN to do the mediation analysis to obtain a confidence interval for binary single mediation analysis. http://ripl.faculty.asu.edu/downloadable-programs/prodclin/ All of ...
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Must there be “an effect to be mediated” in mediational analysis (i.e., must IVs & DVs be correlated)?

Baron and Kenny outlined several steps to aid in determining if a mediational analysis is appropriate to test a particular hypothesis. The very first step was "Show that the initial [independent] ...
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How to explain significant correlation between independent and dependent variable but non significant regression test in the presence of mediation? [duplicate]

Possible Duplicate: Not-significant F but a significant coefficient in multiple linear regression In my research, I use Optimism as the IV, Job Satisfaction as the DV and Work-Family ...