\extrachap{Acronyms}
\begin{description}[PWRSS]
\item[AIC]{Akaike's Information Criterion}
\item[AMD]{Approximate Minimal Degree}
\item[BIC]{Bayesian Information Criterion (also called ``Schwartz's
    Bayesian Information Criterion'')}
\item[BLUP]{Best Linear Unbiased Predictor}
\item[GLMM]{Generalized Linear Mixed Model}
\item[LMM]{Linear Mixed Model}
\item[LRT]{Likelihood Ratio Test}
\item[ML]{Maximum Likelihood}
\item[MLE]{Maximum Likelihood Estimate or Maximum Likelihood Estimator}
\item[NLMM]{NonLinear Mixed Model}
\item[REML]{The REstricted (or ``REsidual'') Maximum Likelihood
    estimation criterion}
\item[PRSS]{Penalized, Residual Sum-of-Squares}
\item[PWRSS]{Penalized, Weighted, Residual Sum-of-Squares}
\end{description}