正是门当户对的婚姻拉大了社会收入差距
<p><span word="Income">Income</span> <span word="inequality">inequality</span> <span word="is">is</span> <span word="a">a</span> <span word="hot">hot</span> <span word="topic">topic</span> <span word="in">in</span> <span word="Washington">Washington</span>. <span word="President">President</span> <span word="Barack">Barack</span> <span word="Obama">Obama</span> <span word="is">is</span> <span word="expected">expected</span> <span word="to">to</span> <span word="highlight">highlight</span> <span word="inequality">inequality</span> <span word="and">and</span> <span word="economic">economic</span> <span word="mobility">mobility</span> <span word="in">in</span> <span word="his">his</span> <span word="State">State</span> <span word="of">of</span> <span word="the">the</span> <span word="Union">Union</span> <span word="address">address</span> <span word="Tuesday">Tuesday</span>.</p><p>在华盛顿，收入失衡是个热点话题。总统奥巴马(<span word="Barack">Barack</span> <span word="Obama">Obama</span>)预计将在周二的国情咨文(<span word="State">State</span> <span word="of">of</span> <span word="the">the</span> <span word="Union">Union</span>)演讲中强调失衡现象以及经济流动性。</p><p><span word="One">One</span> <span word="factor">factor</span> <span word="he">he</span> <span word="likely">likely</span> <span word="won">won</span>'<span word="t">t</span> <span word="discuss">discuss</span>: <span word="Income">Income</span> <span word="inequality">inequality</span> <span word="has">has</span> <span word="gotten">gotten</span> <span word="worse">worse</span> <span word="in">in</span> <span word="past">past</span> <span word="decades">decades</span> <span word="in">in</span> <span word="part">part</span> <span word="because">because</span> <span word="college">college</span>-<span word="educated">educated</span>, <span word="high">high</span>-<span word="earning">earning</span> <span word="men">men</span> <span word="and">and</span> <span word="women">women</span> <span word="are">are</span> <span word="more">more</span> <span word="likely">likely</span> <span word="to">to</span> <span word="marry">marry</span> <span word="each">each</span> <span word="other">other</span>, <span word="rather">rather</span> <span word="than">than</span> <span word="get">get</span> <span word="hitched">hitched</span> <span word="to">to</span> <span word="partners">partners</span> <span word="with">with</span> <span word="divergent">divergent</span> <span word="education">education</span> <span word="or">or</span> <span word="wage">wage</span> <span word="levels">levels</span>.</p><p>他可能不会提及的一大要点是，过去数十年来收入越发失衡的原因之一在于，受过高等教育、薪资不菲的男女结为夫妇的可能性更高，教育背景、薪资水平差距很大的两人则不太可能走到一起。</p><p><span word="A">A</span> <span word="research">research</span> <span word="paper">paper</span> -- <span word="by">by</span> <span word="University">University</span> <span word="of">of</span> <span word="Pennsylvania">Pennsylvania</span> <span word="economist">economist</span> <span word="Jeremy">Jeremy</span> <span word="Greenwood">Greenwood</span>; <span word="Nezih">Nezih</span> <span word="Guner">Guner</span>, <span word="a">a</span> <span word="research">research</span> <span word="professor">professor</span> <span word="at">at</span> <span word="Markets">Markets</span>, <span word="Organizations">Organizations</span> <span word="and">and</span> <span word="Votes">Votes</span> <span word="in">in</span> <span word="Economics">Economics</span> (<span word="MOVE">MOVE</span>), <span word="a">a</span> <span word="research">research</span> <span word="institute">institute</span> <span word="based">based</span> <span word="in">in</span> <span word="Barcelona">Barcelona</span>; <span word="University">University</span> <span word="of">of</span> <span word="Konstanz">Konstanz</span> <span word="economist">economist</span> <span word="Georgi">Georgi</span> <span word="Kocharkov">Kocharkov</span>; <span word="and">and</span> <span word="University">University</span> <span word="of">of</span> <span word="Mannheim">Mannheim</span> <span word="economist">economist</span> <span word="Cezar">Cezar</span> <span word="Santos">Santos</span> -- <span word="tracks">tracks</span> <span word="trends">trends</span> <span word="from">from</span> 1960 <span word="to">to</span> 2005.</p><p>宾夕法尼亚州立大学(<span word="University">University</span> <span word="of">of</span> <span word="Pennsylvania">Pennsylvania</span>)经济学家<span word="Jeremy">Jeremy</span> <span word="Greenwood">Greenwood</span>、巴塞罗那研究机构<span word="Markets">Markets</span>, <span word="Organizations">Organizations</span> <span word="and">and</span> <span word="Votes">Votes</span> <span word="in">in</span> <span word="Economics">Economics</span> (<span word="MOVE">MOVE</span>)研究教授<span word="Nezih">Nezih</span> <span word="Guner">Guner</span>、德国康斯坦茨大学(<span word="University">University</span> <span word="of">of</span> <span word="Konstanz">Konstanz</span>)经济学家<span word="Georgi">Georgi</span> <span word="Kocharkov">Kocharkov</span>以及曼海姆大学(<span word="University">University</span> <span word="of">of</span> <span word="Mannheim">Mannheim</span>)经济学家<span word="Cezar">Cezar</span> <span word="Santos">Santos</span>联合进行了一项研究，追踪1960年至2005年间人们的择偶趋势。</p>
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