10.07.2015 Views

Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

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CHAPTER 17f1 ON x1 x2 x3;f2 ON x1 x2 x3;f3 ON x1 x2 x3;The list function can also be used with the WITH option,y1-y3 WITH y4-y6;This impliesy1 WITH y4;y1 WITH y5;y1 WITH y6;y2 WITH y4;y2 WITH y5;y2 WITH y6;y3 WITH y4;y3 WITH y5;y3 WITH y6;FREEING PARAMETERS AND ASSIGNINGSTARTING VALUESThe asterisk (*) is used to free a parameter and/or assign a starting valuefor the estimation of that parameter. It is placed after a parameter with anumber following it. For example:y1*.5;is interpreted as freeing the variance/residual variance of y1 to beestimated with a starting value of 0.5.Consider the BY statements from the previous section:f1 BY y1 y2 y3 y4 y5;f2 BY y6 y7 y8 y9;As mentioned previously, the above statements result in the factorloadings for y1 and y6 being fixed at one in order to set the metric of thelatent variables f1 and f2. All of the other parameters mentioned are free588

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