\documentclass[twoside]{tufte-book}
\usepackage{array}
\usepackage{bookmark}
\usepackage{booktabs}
\usepackage{dcolumn}
\newcolumntype{.}{D{.}{.}{2}}
%\usepackage{caption}
%\usepackage{subcaption}
%\subcaptionsetup{compatibility=false}
\begin{document}
\begin{table*}
\centering
\caption{Three payoff matrices.}\label{tab:payoffMatrices}
\begin{tabular}{@{} r.. @{}}
\toprule
{} & \multicolumn{2}{c}{you say} \\
\cmidrule{2-3}
{} & \multicolumn{1}{c}{``not-man''} & \multicolumn{1}{c}{``man''} \\
\midrule
female & & $-\$1.00$ \\
male & $-\$1.00$ & \\
\bottomrule
\end{tabular}
\end{table*}
%\begin{table*}
% \centering
% \caption{Three payoff matrices.}\label{tab:payoffMatrices}
% \begin{subtable}[b]{0.3\textwidth}
% \begin{tabular}{@{} r.. @{}}
% \toprule
% {} & \multicolumn{2}{c}{you say} \\
% \cmidrule{2-3}
% {} & \multicolumn{1}{c}{``not-man''} & \multicolumn{1}{c}{``man''} \\
% \midrule
% female & & $-\$1.00$ \\
% male & $-\$1.00$ & \\
% \bottomrule
% \end{tabular}
% \caption{Symmetric costs}\label{subtab:symmetricCosts}
% \end{subtable}
% \hfill
% \begin{subtable}[b]{0.3\textwidth}
% \begin{tabular}{@{} .. @{}}
% \toprule
% \multicolumn{2}{c}{you say} \\
% \midrule
% \multicolumn{1}{c}{``not-man''} & \multicolumn{1}{c}{``man''} \\
% \midrule
% {} & $-\$1.33$ \\
% $-\$0.67$ & {} \\
% \bottomrule
% \end{tabular}
% \caption{Asymmetric costs}\label{subtab:asymmetricCosts}
% \end{subtable}
% \hfill
% \begin{subtable}[b]{0.3\textwidth}
% \begin{tabular}{@{} .. @{}}
% \toprule
% \multicolumn{2}{c}{you say} \\
% \midrule
% \multicolumn{1}{c}{``not-man''} & \multicolumn{1}{c}{``man''} \\
% \midrule
% {} & $C(\text{I})$ \\
% $C(\text{II})$ & {} \\
% \bottomrule
% \end{tabular}
% \caption{Costs, in general}\label{subtab:symbolicCosts}
% \end{subtable}
%\end{table*}
\end{document}