Chapter02曼昆经济学.docx
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Chapter02曼昆经济学.docx
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Chapter02曼昆经济学
Chapter2
ThinkingLikeanEconomist
MULTIPLECHOICE
1.Whichisthebeststatementaboutthewayeconomistsstudytheeconomy?
a.Theystudythepast,butdonottrytopredictthefuture.
b.Theyuseaprobabilisticapproachbasedoncorrelationsbetweeneconomicevents.
c.Theydevisetheories,collectdata,thenanalyzethedatatotestthetheories.
d.Theyusecontrolledexperimentsmuchthesamewayabiologistorphysicistdoes.
ANSWER:
c.Theydevisetheories,collectdata,thenanalyzethedatatotestthetheories.
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2.Termsusedbyaneconomistwouldinclude
a.vectorspacesandaxioms.
b.tortsandvenues.
c.egoandcognitivedissonance.
d.comparativeadvantageandelasticity.
ANSWER:
d.comparativeadvantageandelasticity.
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3.Byscientificmethodwemean
a.theuseofmodernelectronictestingequipmenttounderstandtheworld.
b.thedispassionatedevelopmentandtestingoftheoriesabouthowtheworldworks.
c.theuseofcontrolledexperimentsinunderstandingthewaytheworldworks.
d.findingevidencetosupportpreconceivedtheoriesabouthowtheworldworks.
ANSWER:
b.thedispassionatedevelopmentandtestingoftheoriesabouthowtheworldworks.
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4.Whosaid,“Thewholeofscienceisnothingmorethantherefinementofeverydaythinking.”?
a.IsaacNewton
b.AlbertEinstein
c.SigmundFreud
d.BenjaminFranklin
ANSWER:
b.AlbertEinstein
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5.AlbertEinsteinoncemadethefollowingobservationaboutscience:
a.“Thewholeofscienceisnothingmorethantherefinementofeverydaythinking.”
b.“Thewholeofscienceisnothingmorethananinterestingintellectualexercise.”
c.“Inordertounderstandscience,onemustrelysolelyonabstraction.”
d.“Inordertounderstandscience,onemusttranscendeverydaythinking.”
ANSWER:
a.“Thewholeofscienceisnothingmorethantherefinementofeverydaythinking.”
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6.SirIsaacNewton’sdevelopmentofthetheoryofgravityafterobservinganapplefallfromatreeisanexampleof
a.controlledexperimentsusedtodevelopscientifictheories.
b.beingintherightplaceattherighttime.
c.anideawhosetimehadcome.
d.theinterplaybetweenobservationandtheoryinscience.
ANSWER:
d.theinterplaybetweenobservationandtheoryinscience.
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7.Acommonthreadbetweeneconomicsandothersciencessuchasphysicsisthat
a.experimentsaremostoftenconductedinalab.
b.real-worldobservationsoftenleadtotheories.
c.aPh.D.isrequiredtotrulyunderstandanyscience.
d.bothdealprimarilywithabstractconcepts.
ANSWER:
b.real-worldobservationsoftenleadtotheories.
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8.Theuseoftheoryandobservationismoredifficultineconomicsthaninsciencessuchasphysicsduetothedifficultyin
a.evaluatinganeconomicexperiment.
b.devisinganeconomicexperiment.
c.actuallyperforminganexperimentinaneconomicsystem.
d.Alloftheabovearecorrect.
ANSWER:
c.actuallyperforminganexperimentinaneconomicsystem.
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9.Becauseitisdifficultforeconomiststouseexperimentstogeneratedata,theygenerallymust
a.dowithoutdata.
b.usewhateverdatatheworldgivesthem.
c.selectacommitteeofeconomiststomakeupdataforalleconomiststouse.
d.usehypothetical,computer-generateddata.
ANSWER:
b.usewhateverdatatheworldgivesthem.
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10.Whentestingtheories,economists
a.mustmakedowithwhateverdatatheworldgivesthem.
b.canmanipulateeconomicconditionseasierthanotherscientificfields.
c.canenlistthegovernment’shelptomanipulateeconomicconditions.
d.canachievestatisticallyvalidresultswithmuchsmallersamplesizes.
ANSWER:
a.mustmakedowithwhateverdatatheworldgivesthem.
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11.Onedifficultyeconomistsfacethatsomeotherscientistsdonotisthat
a.unlikeothersciences,economicstudiesmustincludethelargesteconomicplayer,thegovernment.
b.economistsunfortunatelyreceivelessgovernmentfundingthanotherscientists.
c.corporationsarereluctanttodisclosenecessaryinformationforeconomicresearch.
d.experimentsareoftendifficultineconomics.
ANSWER:
d.experimentsareoftendifficultineconomics.
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12.Themostcommondatafortestingeconomictheoriescomefrom
a.carefullycontrolledandconductedlaboratoryexperiments.
b.traditionaleconomies.
c.historicalepisodesofeconomicchange.
d.centrallyplannedeconomies.
ANSWER:
c.historicalepisodesofeconomicchange.
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13.Foreconomists,substitutesforlaboratoryexperimentsareoften
a.naturalexperimentsofferedbyhistory.
b.computer-generatedexperiments.
c.studiesconductedbyotherdisciplinessuchassociologists.
d.well-constructedsimulations.
ANSWER:
a.naturalexperimentsofferedbyhistory.
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14.Economistsmakeassumptions
a.todiminishthechanceofwronganswers.
b.tomaketheworldeasiertounderstand.
c.becauseallscientistsmakeassumptions.
d.tomakecertainthatallnecessaryvariablesareincluded.
ANSWER:
b.tomaketheworldeasiertounderstand.
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15.Theartofscientificthinkingincludes
a.knowinghowthemajororgansofthehumanbodywork.
b.understandingeveryscientificfield—physics,biologyandeconomics.
c.decidingwhichassumptionstomake.
d.beingabletomathematicallyexpressnaturalforces.
ANSWER:
c.decidingwhichassumptionstomake.
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16.Ifaneconomistdevelopsatheoryaboutinternationaltradebasedontheassumptionthatthereareonlytwocountriesandtwogoods,
a.thetheorycanbeusefulonlyinsituationsinvolvingtwocountriesandtwogoods.
b.itisatotalwasteoftime,sincetheactualworldhasmanycountriestradingmanygoods.
c.thetheorycanbeusefulinhelpingeconomistsunderstandthecomplexworldofinternationaltradeinvolvingmanycountriesandmanygoods.
d.thetheorycanbeusefulintheclassroom,buthasnouseintherealworld.
ANSWER:
c.thetheorycanbeusefulinhelpingeconomistsunderstandthecomplexworldofinternationaltradeinvolvingmanycountriesandmanygoods.
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17.The1973warintheMiddleEastprovidedeconomistswiththeopportunitytoobservetheinverserelationshipbetween
a.oilpricesandlivingstandards.
b.militarybuildupsandgovernmentspending.
c.theflowofcrudeoilandoilprices.
d.theflowofcrudeoilandpoliticalpower.
ANSWER:
a.oilpricesandlivingstandards.
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18.Historicalepisodesarevaluabletoeconomistsbecause
a.itallowseconomiststoseehowfarthedisciplinehasevolved.
b.hindsightisalways20/20.
c.itiseasiertoevaluateapastsituationthantopredictafuturesituation.
d.theyalloweconomiststoevaluateeconomictheoriesofthepresent.
ANSWER:
d.theyalloweconomiststoevaluateeconomictheoriesofthepresent.
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19.Whatwouldbethebeststatementaboutatheorybasedonassumptionsthatarenottrue?
a.Iftheassumptionsunderlyingthetheoryarenottrue,thetheorymustbefalse.
b.Theideasmaybegoodintheory,butnotinpractice.
c.Thetheoryisagoodoneifithelpsustounderstandhowtheworldworks.
d.Thetheoryisagoodoneifnologicalmistakesweremadeindevelopingit.
ANSWER:
c.Thetheoryisagoodoneifithelpsustounderstandhowtheworldworks.
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20.Whatisthegoaloftheories?
a.toprovideaninteresting,butnotuseful,frameworkofanalysis
b.toprovokestimulatingdebateinscientificjournals
c.todemonstratethatthedeveloperofthetheoryiscapableoflogicalthinking
d.tohelpscientistsunderstandhowtheworldworks
ANSWER:
d.tohelpscientistsunderstandhowtheworldworks
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21.Wheneconomistsattempttosimplifytherealworldandmakeiteasiertounderstandtheymake
a.assumptions.
b.mistakesinjudgment.
c.predictions.
d.evaluations.
ANSWER:
a.assumptions.
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22.Goodassumptionscan
a.causeeconomiststoleaveoutimportantvariableswhichmaketheirtheoriesworthless.
b.simplifythecomplexworldandmakeiteasiertounderstand.
c.furthercomplicateanalreadydifficulttopic.
d.alloweconomiststoseethe‘bigpicture’insteadofonlysmallsegments.
ANSWER:
b.simplifythecomplexworldandmakeiteasiertounderstand.
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23.Forascientist,thedecisionofwhichassumptiontomakeis
a.theeasiestpartofthescientificmethod.
b.theflipofacoin.
c.almostimpossible.
d.partart.
ANSWER:
d.partart.
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24.Theartofscientificthinkingis
a.easierwithasolidmathematicalbackground.
b.theabilitytomakeanabstractsubjecteasytounderstand.
c.decidingwhichassumptionstomake.
d.notnecessarytobeaneconomist.
ANSWER:
c.decidingwhichassumptionstomake.
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25.Whenscientistsmakegoodassumptions,they
a.greatlysimplifytheproblemwithoutsubstantiallyaffectingtheanswer.
b.furthercomplicateanalreadycomplicatedsubject.
c.canleaveoutnecessaryvariablesthatmayresultinincorrectanswers.
d.maynotbeabletoreachanappropriateconclusion.
ANSWER:
a.greatlysimplifythepro
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