\begin{table}
\small
\centering
\caption{Realized matching rate for time pressure group \label{table:timepressuresadvantage}
\begin{tabularx}{0.7\textwidth}{lllll}
&&NoB & Matching rate \\ Nash mixed prediction & && $0.071$ \\ Matching game &Local control& 559 & 0.64(0.006)\\ &Online control& 458 & 0.63(0.004)\\ &Online time-pressure& 388 & 0.63(0.005)\\ Hider-seeker game &Local control& 1060 & 0.09(0.002)\\ &Online control& 893 & 0.09(0.002)\\&Online time-pressure& 753 & 0.15(0.003)\\
\end{tabularx}
\\This table illustrates the realized seeking win rate in normal condition(6s) vs time pressure condition (2s), along with the standard error in the bracket.}
\end{table}
答案1
不要忽略错误消息。}标题后面有一个缺失，}结尾处有一个虚假信息。它不会给出错误，但tabularx在没有列的情况下无法做任何有用的事情X，所以
\documentclass{article}
\usepackage{tabularx}
\begin{document}
\begin{table}
\small
\centering
\caption{Realized matching rate for time pressure group \label{table:timepressuresadvantage}}
\begin{tabularx}{0.7\textwidth}{>{\raggedright}X>{\raggedright}Xll}
&&NoB & Matching rate \\
Nash mixed prediction & && $0.071$ \\
Matching game &Local control& 559 & 0.64(0.006)\\
&Online control& 458 & 0.63(0.004)\\
&Online time-pressure& 388 & 0.63(0.005)\\
Hider-seeker game &Local control& 1060 & 0.09(0.002)\\
&Online control& 893 & 0.09(0.002)\\
&Online time-pressure& 753 & 0.15(0.003)\\
\end{tabularx}
This table illustrates the realized seeking win rate in normal condition(6s) vs time pressure condition (2s), along with the standard error in the bracket.
\end{table}
\end{document}