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Example 10
Text Output
Because of the constraints imposed in Model B, only three distinct parameters are
estimated instead of six. As a result, the number of degrees of freedom has increased
from 0 to 3.
Model B is acceptable at any conventional significance level.
The following are the parameter estimates obtained under Model B for the young
subjects. (The parameter estimates for the old subjects are the same.)
You can see that the standard error estimates obtained under Model B are smaller (for
the young subjects, 0.780, 0.909, and 0.873) than the corresponding estimates obtained
under Model A (0.944, 1.311, and 0.953). The Model B estimates are to be preferred
over the ones from Model A as long as you believe that Model B is correct.
Chi-square = 4.588
Degrees of freedom = 3
Probability level = 0.205
Computation of degrees of freedom (Default model)
Number of distinct sample moments: 6
Number of distinct parameters to be estimated: 3
Degrees of freedom (6 - 3): 3
Covariances: (young subjects - Default model)
Estimate S.E. C.R. P Label
recall1
<-->
cued1
4.056 .780 5.202 *** cov_rc
Variances: (young subjects - Default model)
Estimate S.E. C.R. P Label
recall1
5.678
.909 6.245 *** var_rec
cued1
5.452
.873 6.245 *** var_cue