Kline (2011)

The more complex the model, the more the sample size is required.

A “typical” sample size is about 200 cases.

Jackson (2003)

Sample size should be determined based on the number of parameter estimates (N:q rule). 5:1 is acceptable.

Faul et al., (2007, 2009)

Use G*Power software to determine sample size requirement.

You may download the installer here for windows and here for Mac.

Please find the guideline here.

Further Reading

Faul, F., Erdfelder, E., Buchner, A., & Lang, A.-G. (2009). Statistical power analyses using G* Power 3.1: Tests for correlation and regression analyses. Behavior research methods, 41(4), 1149-1160. Click here.

Faul, F., Erdfelder, E., Lang, A.-G., & Buchner, A. (2007). G* Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences. Behavior research methods, 39(2), 175-191. Click here.

Kline, R. B. (2011). Principles and practice of structural equation modeling (3rd ed.). New York, NY: The Guilford Press. Click here.

Cohen, J. (1992). Quantitative methods in psychology: A power primer. Psychological Bulletin, 112(1), 155-159.