资源描述：
《多恩布什宏观经济学第十版课后习题答案.doc》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、·CHAPTER8SolutionstotheProblemsintheTextbook:ConceptualProblems:1.Thefirstquestionyoushouldaskyourselfasapolicymakeriswhetheradisturbanceistransitoryorpersistent.Youshouldthenaskyourselfhowlongitwouldtaketoputasuggestedpolicymeasureintoeffectandhowlongitwilltakefor
2、thepolicytohavethedesiredeffectontheeconomy.Inaddition,youneedtoknowhowreliabletheestimatesofyouradvisorsareabouttheeffectsofthepolicy.Ifadisturbanceissmallandprobablytransitory,youmaybebestadvisedtodonothing,becauseanymeasureyoutakeislikelytohaveitseffectafterthee
3、conomyhasrecovered.Thereforeyouractionmightonlyfurtheraggravatetheproblem.2.a.Theinsidelagisthetimeittakesafteraneconomicdisturbancehasoccurredtorecognizeandimplementapolicyactionthatwilladdressthedisturbance.2.b.Theinsidelagisdividedintothreeparts.First,thereisthe
4、recognitionlag,thatis,thetimeittakesforpolicymakerstorealizethatadisturbancehasoccurredandthatapolicyresponseiswarranted.Second,thereisthedecisionlag,thatis,thetimeittakestodecideonthemostdesirablepolicyresponseafteradisturbanceisrecognized.Finally,thereistheaction
5、lag,thatis,thetimeittakestoactuallyimplementthepolicymeasure.2.c.InsidelagsareshorterformonetarypolicythanforfiscalpolicysincetheFOMCmeetsonaregularbasistodiscussandimplementmonetarypolicy.Fiscalpolicy,ontheotherhand,hastobeinitiatedandpassedbybothhousesoftheU.S.Co
6、ngressandthiscanbealengthyprocess.Theexceptionsaretheso-calledautomaticstabilizers;however,theyonlyworkwellforsmallandtransitorydisturbances2.dAutomaticstabilizershavenoinsidelag;theyareendogenousandfunctionwithoutspecificgovernmentintervention.Examplesaretheincome
7、taxsystem,thewelfaresystem,unemploymentinsurance,andtheSocialSecuritysystem.Theyallreducetheamountbywhichoutputchangesinresponsetoaneconomicdisturbance.3.a.Theoutsidelagisthetimeittakesforapolicyaction,onceimplemented,tohaveitsfulleffectontheeconomy.3.b.Generally,t
8、heoutsidelagisadistributedlagwithasmallimmediateeffectandalargeroveralleffectoveralongertimeperiod.Theeffectisspreadovertime,sinceaggregatedemand
