
Message/Author 

Erik Thoonen posted on Thursday, February 21, 2008  2:17 am



To answer the question whether differences in perceptions (teachers vs. school leader) of school leaders' leadership influence organizational variables, I would like to perform a multilevel path analysis (intraclass correlation between schools <.25) The next input I used to perform the first analysis: VARIABLE: NAMES ARE school A_popul wel07m par07m iv07m perlv perlic perlis; BETWEEN = A_popul; CLUSTER = school; MISSING ARE ALL (1); ANALYSIS: TYPE = TWOLEVEL; MODEL: %WITHIN% par07m wel07m iv07m ON perlv; (etc.) %BETWEEN% par07m wel07m iv07m ON perlv; (etc.) perlv perlic perlis ON A_popul; However, Mplus could not run this input and gave me the next error messages: *** ERROR in Model command Variable is a yvariable on the BETWEEN level but is an xvariable on the WITHIN level: PERLV (same for other pervariables) "A_popul" means the number of students and is equal for all teachers of the same school, and therefore automatically a betweenvariable. Mu question is: how can I run this path analyses in which the variables: perlv, perlic, perlis can be the Xvariabel on the withinlevel, but are an intermediate variable on the betweenlevel? Or is this not possible at all? Thanks a lot! 

Boliang Guo posted on Thursday, February 21, 2008  2:46 am



you pls read following paper for reference. Krull, J. L. & MacKinnon, D. P. (1999). Multilevel Mediation Modeling in GroupBased Intervention Studies. Evaluation Review, 23, 418444. Krull, J. L. & MacKinnon, D. P. (2001). Multilevel modeling of individual and group level mediated effects. Multivariate Behavioral Research, 36, 249277. MacKinnon, D. P. (2007). Introduction to Statistical Mediation Analysis. Mahwah, NJ: Erlbaum. multilevel path analysis is easy to set up for 221, 111 and 211 model, not available foe 121 model, which the depend variable(M) is level 2 variable but the predicator is level 1 variable, there is a latest paper in PM2007 show the multilevel equation for level 2 dependent variable predicated by level 1 variable, pls have a look for reference.you can find it in Mplus web. 

Erik Thoonen posted on Thursday, February 21, 2008  7:18 am



With regard to the mentioned model, my model estimates that A_popul (level2) has an influence on perlv, perlic, perlis (level1) which influence organizational variables (level1). So I consider only A_popul as a betweenvariable, because there is no variation within schools regarding the number of students. So, isn't it that I have a 211 model or do I misunderstand something? 


Look at the Mplus V5 UG ex 9.4 and 9.9 using the WLSM estimator. 

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