IBM® SPSS® Amos™ 28

Exact second derivatives can be used for estimating standard errors, estimating the covariance matrix of estimates, estimating the correlations among estimates, and computing critical ratios (including critical ratios for differences between estimates). To use exact second derivatives:

1.Press (Menu: View→Analysis Properties).

2.Select the Output tab

3.Place a check mark next to Observed information matrix.

In an Amos program, use the ObservedInfo method of the AmosEngine class.

By default, the matrix of expected second derivatives is used.