题名：Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models.<br/><table width="100%" cellspacing="0" cellpadding="0" border="0" bgcolor="#edf2d5"><tbody><tr><td width="148" valign="top" nowrap="nowrap" align="right" class="data_heading">作者</td>
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<td class="data_content"><a alt="检索针对 AU=&quot;preacher kristopher j&quot;" href="http://csa.lib.tsinghua.edu.cn/ids70/p_search_form.php?field=au&amp;query=preacher+kristopher+j&amp;log=literal&amp;SID=c9a7e6d2de5cd139170838a7e4cadcf8">Preacher, Kristopher J.</a><sup class="sup">1</sup>;
<a alt="检索针对 AU=&quot;hayes andrew f&quot;" href="http://csa.lib.tsinghua.edu.cn/ids70/p_search_form.php?field=au&amp;query=hayes+andrew+f&amp;log=literal&amp;SID=c9a7e6d2de5cd139170838a7e4cadcf8">Hayes, Andrew F.</a><sup class="sup">2</sup></td></tr></tbody></table><br/>Behavior Research Methods. Vol 40(3), Aug 2008, pp. 879-891