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realm1
2012 Mar 23
0
Fixing error variance in a path analysis to model measurement error in scales using sem package
...NA, (1 - alpha(pRU))*(variance(pRU))
rRU <-> rRU, NA, (1 - alpha(rRU))*(variance(rRU))
power_alt -> em, iota1
power_alt <-> power_alt, NA, (1 - alpha(power_alt))*(variance(power_alt))
ms_alt -> em, zeta1
ms_alt <-> ms_alt, NA, (1 - alpha(ms_alt))*(variance(ms_alt))
em -> relM1, eta1
em <-> em, NA, (1 - alpha(em))*(variance(em))
relM1 <-> relM1, lam1
After testing this model, the model fits were unnaceptable and package sem
could not compute modification instances. In contrast, when I do not fix
error variances, after a few modifications to the model, I am ab...