GRE阅读高频机经原文：鱼的social learning
<p> 鱼的<span word="social">social</span> <span word="learning">learning</span></p><p> <span word="Although">Although</span> <span word="social">social</span> <span word="learningis">learningis</span> <span word="well">well</span> <span word="documented">documented</span> <span word="among">among</span> <span word="fish">fish</span>, <span word="few">few</span> <span word="studies">studies</span> <span word="have">have</span> <span word="investigated">investigated</span> <span word="social">social</span> <span word="learning">learning</span> <span word="within">within</span> <span word="a">a</span> <span word="developmental">developmental</span> <span word="context">context</span> <span word="in">in</span> <span word="these">these</span> <span word="taxa">taxa</span>. <span word="Rather">Rather</span> <span word="than">than</span> <span word="investigating">investigating</span> <span word="the">the</span> <span word="development">development</span> <span word="of">of</span> <span word="a">a</span> <span word="particular">particular</span> <span word="skill">skill</span>, <span word="Chapman">Chapman</span>, <span word="Ward">Ward</span>, <span word="and">and</span> <span word="Krause">Krause</span> <span word="investigated">investigated</span> <span word="the">the</span> <span word="role">role</span> <span word="of">of</span> <span word="group">group</span> <span word="density">density</span> <span word="during">during</span> <span word="development">development</span> <span word="in">in</span> <span word="later">later</span> <span word="foraging">foraging</span> <span word="success">success</span> <span word="in">in</span> <span word="laboratory">laboratory</span>-<span word="housed">housed</span> <span word="guppies">guppies</span>. <span word="When">When</span> <span word="raised">raised</span> <span word="with">with</span> <span word="a">a</span> <span word="small">small</span> <span word="number">number</span> <span word="of">of</span> <span word="conspecifics">conspecifics</span>, <span word="guppies">guppies</span> <span word="were">were</span> <span word="quicker">quicker</span> <span word="to">to</span> <span word="locate">locate</span> <span word="food">food</span> <span word="by">by</span> <span word="following">following</span> <span word="a">a</span> <span word="trained">trained</span> <span word="adult">adult</span> <span word="guppy">guppy</span> <span word="than">than</span> <span word="were">were</span> <span word="guppies">guppies</span> <span word="raised">raised</span> <span word="in">in</span> <span word="large">large</span> <span word="groups">groups</span>. <span word="This">This</span> <span word="counterintuitive">counterintuitive</span> <span word="finding">finding</span> <span word="is">is</span> <span word="explained">explained</span> <span word="by">by</span> <span word="the">the</span> <span word="fact">fact</span> <span word="that">that</span> <span word="guppies">guppies</span> <span word="reared">reared</span> <span word="in">in</span> <span word="the">the</span> <span word="high">high</span>-<span word="density">density</span> <span word="condition">condition</span> <span word="were">were</span> <span word="less">less</span> <span word="likely">likely</span> <span word="to">to</span> <span word="shoalwith">shoalwith</span> <span word="others">others</span> <span word="and">and</span>, <span word="therefore">therefore</span>, <span word="were">were</span> <span word="less">less</span> <span word="likely">likely</span> <span word="to">to</span> <span word="learn">learn</span> <span word="the">the</span> <span word="benefits">benefits</span> <span word="of">of</span> <span word="social">social</span> <span word="learning">learning</span>. <span word="Instead">Instead</span>, <span word="fish">fish</span> <span word="reared">reared</span> <span word="in">in</span> <span word="high">high</span>-<span word="density">density</span> <span word="situations">situations</span> <span word="may">may</span> <span word="learn">learn</span> <span word="that">that</span> <span word="conspecifics">conspecifics</span> <span word="are">are</span> <span word="to">to</span> <span word="be">be</span> <span word="viewed">viewed</span> <span word="as">as</span> <span word="competitors">competitors</span>, <span word="rather">rather</span> <span word="than">than</span> <span word="as">as</span> <span word="potential">potential</span> <span word="sources">sources</span> <span word="of">of</span> <span word="adaptive">adaptive</span> <span word="information">information</span>. <span word="This">This</span> <span word="finding">finding</span> <span word="suggests">suggests</span> <span word="that">that</span> <span word="at">at</span> <span word="least">least</span> <span word="for">for</span> <span word="guppies">guppies</span>, <span word="the">the</span> <span word="early">early</span> <span word="social">social</span> <span word="environment">environment</span> <span word="may">may</span> <span word="have">have</span> <span word="an">an</span> <span word="effect">effect</span> <span word="on">on</span> <span word="the">the</span> <span word="capacity">capacity</span> <span word="for">for</span> <span word="social">social</span> <span word="learning">learning</span>, <span word="if">if</span> <span word="not">not</span> <span word="on">on</span> <span word="the">the</span> <span word="socially">socially</span> <span word="learned">learned</span> <span word="behaviors">behaviors</span> <span word="themselves">themselves</span>.</p><p> </p>
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