Erratum to: PSYCHOMETRIKA, 2011, 76, 537–549 DOI10.1007/s11336-011-9218-4
In our paper:
Jennrich, R.I. & Bentler, P.M. (2011). Exploratory bi-factor analysis. Psychometrika, 76, 537–549.
Eight lines from the bottom of page 548 should read
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\begin{document}$$\frac{dB}{d\varLambda }=4\bigl(0,\varLambda _2\cdot\bigl(\varLambda _2^2N \bigr)\bigr) $$\end{document}

We would like to thank James Steiger for pointing out this error.