Chapter 2 Research Met

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1、ResearchMethodsinHumanSexualityChapter2Thismultimediaproductanditscontentsareprotectedundercopyrightlaw.Thefollowingareprohibitedbylaw:anypublicperformanceordisplay,includingtransmissionofanyimageoveranetwork;preparationofanyderivativework,includingtheextraction,inwho

2、leorinpart,ofanyimages;anyrental,lease,orlendingoftheprogram.1Copyright2002Allyn&BaconResearchMethodsinHumanSexualityAScientificApproachtoHumanSexualityPopulationsandSamples:RepresentingtheWorldofDiversityMethodsofObservationTheCorrelationalMethodTheExperimentalMethod

3、EthicsinSexResearch2Copyright2008Allyn&BaconAScientificApproachTostudyhumansexuality,anempiricalapproachisused.Knowledgeisbasedonresearchevidence3Copyright2008Allyn&BaconAScientificApproachTheScientificMethodFormulatingaresearchquestionFramingtheresearchquestioninthef

4、ormofahypothesisaprecisepredictionaboutbehaviorthatistestedthroughresearchTestingthehypothesisDrawingconclusions4Copyright2008Allyn&BaconAScientificApproachGoalsoftheScienceofHumanSexualityDescribe:clear,unbiased,preciseExplain:relationobservationstootherfactorsPredi

5、ct:useobservationstoestimatefuturebehaviorordevelopments5Copyright2008Allyn&BaconPopulationsandSamplesPopulationAcompletegroupofpeopleoranimalsTargetpopulation:particulargroupbeingstudied(e.g,Americans,homosexuals)SamplePartofapopulationthatischosentoparticipateinrese

6、archInordertogeneralizeresultstothepopulation,samplesneedtorepresentit.6Copyright2008Allyn&BaconPopulationsandSamplesSamplingMethodsRandomsampleEverymemberofapopulationhasanequalchanceofbeinginthesamplebeingstudiedForexample,putallmembersofapopulationinahatanddrawthen

7、umberneededforthesampleStratifiedrandomsampleRandomsampleinwhichknownsubgroupsinapopulationarerepresentedinproportiontotheirnumbersinthepopulationForexample,if87%ofthepopulationisCaucasian,samplingisdonetoensurethat87%ofthesampleisCaucasianSexresearchsuffersfromvolunt

8、eerbiasPeoplewhoparticipatearethosewillingtodiscussintimatematters.7Copyright2008Allyn&BaconMethodsofObservationTheCase-Stud