**Rules of Thumb, Shortcuts, Loose Ends, and Other Off-Topic Topics:**

*Unless you can prove your approximation is as good as my exact solution, I am not interested in your approximation. *R. Daryl Bock[1]

*Unless you can show me your exact solution is better than my approximation, I am not interested in your exact solution. *Benjamin D. Wright[2]

*Rule of Thumb Estimates for Rasch Standard Errors*

The asymptotic standard error for Marginal Maximum Likelihood estimates of the Rasch difficulty *d* or ability *b* parameters is:

Continue: Rules of Thumb, Short Cuts, Loose Ends

[1] I first applied to the University of Chicago because Prof. Bock was there.

[2] There was a reason I ended up working with Prof. Wright.