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A Beginner's Guide to Structural Equation Modeling

Randall E. Schumacker, Richard G. Lomax

Chapter 13

Multiple Sample, Multiple Group, and Structured Means Models - all with Video Answers

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Chapter Questions

Problem 1

Nursing programs are interested in knowing if their outcomes are similar from one semester to the next. Two semesters of data were obtained on how student effort and learning environment predicted clinical competence in nursing. The regression model is:
( FIGURE CAN'T COPY )
Create a LISREL-SIMPLIS program to test whether the regression coefficients in the model are the same or statistically significantly different for the two semester samples of data. Semester 1 had 250 nurses and Semester 2 had 205 nurses. (Note: The means and standard deviations were not available, so assume the data is in standardized form and only use the correlation matrix in your analysis.)
$$
\begin{aligned}
&\text { Semester } 1(\mathrm{~N}=\mathbf{2 5 0})\\
&\begin{array}{lccc}
\hline & \text { Clinical } & \text { Effort } & \text { Learn } \\
\hline \text { Clinical } & 1.0 & & \\
\text { Effort } & .28 & 1.0 & \\
\text { Learn } & .23 & .25 & 1.0 \\
\hline
\end{array}
\end{aligned}
$$
$$
\begin{aligned}
&\text { Semester } 2(N=205)\\
&\begin{array}{lccc}
\hline & \text { Clinical } & \text { Effort } & \text { Learn } \\
\hline \text { Clinical } & 1.0 & & \\
\text { Effort } & .21 & 1.0 & \\
\text { Learn } & .16 & .15 & 1.0 \\
\hline
\end{array}
\end{aligned}
$$

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Problem 2

Create a LISREL-SIMPLIS program that produces output to determine if path coefficients are statistically significantly different. You will need the LISREL-SIMPLIS software and separate data set information provided below to perform this task. Also, provide the path diagrams with interpretation of results using the Excel program.

The path model tests that job satisfaction (satis) is indicated by boss attitude (boss) and the number of hours worked (hrs). The boss attitude (boss) is in turn indicated by the employee satisfaction (satis). The boss attitude (boss) is also indicated by the type of work performed (type), level of assistance provided (assist), and evaluation of the work (eval). The Equation command would therefore be specified as follows:
```
Equation:
satis = boss hrs
boss = type assist eval satis
```

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