10.07.2015 Views

Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

ANALYSIS CommandThe following rotations are available:GEOMINQUARTIMINCF-VARIMAXCF-QUARTIMAXCF-EQUAMAXCF-PARSIMAXCF-FACPARSIMCRAWFEROBLIMINPROMAXVARIMAXTARGETAll rotations are available as both oblique and orthogonal exceptPROMAX and QUARTIMIN which are oblique and VARIMAX whichis orthogonal. The default for rotations that can be both oblique andorthogonal is oblique.The GEOMIN rotation is recommended when factor indicators havesubstantial loadings on more than one factor resulting in a variablecomplexity greater than one. Geomin performs well on Thurstone’s 26variable Box Data (Browne, 2001, Table 3, p. 135). The GEOMINepsilon (Browne, 2001) default setting varies as a function of the numberof factors. With two factors, it is .0001. With three factors, it is .001.With four or more factors, it is .01. The default can be overridden usingthe GEOMIN option. The epsilon value must be a positive number.The Geomin rotation algorithm often finds several local minima of therotation function (Browne, 2001). To find a global minimum, 30random rotation starts are used as the default. The RSTARTS option ofthe ANALYSIS command can be used to change the default.Following is an example of how to change the GEOMIN epsilon valuefor an oblique rotation:ROTATION = GEOMIN (OBLIQUE .5);orROTATION = GEOMIN (.5);537

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!