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1、TheEffectsofInterval14Runninghead:THEEFFECTSOFINTERVALTIMEANDALTERNATEFORMSTheEffectsofIntervalTimeandAlternateFormsonPracticeEffectsinSelectionTestsErikaG.PetersonRadfordUniversityTheEffectsofInterval14AbstractThisstudyinvestigatedtheeffectsofdifferingretestingintervalsanda
2、lternatetestformsonscoreincreasesduetopracticeeffects.AtestofGeneralMentalAbility(GMA)wasadministeredattime1withretestsadministeredtoparticipantsateither2week,1month,4monthor6monthintervals.Onthesubsequentadministration,halfoftheparticipantsweregivenanalternateformoftheGMAte
3、st.Theresultsindicatedthattherewassignificantpracticeeffectsfoundatthe2weekintervalonly.Asignificantsimpleeffectoftestformwasfoundatthe2weekinterval.Thefindingsarecongruentwithpreviousresearchthatpracticeeffectsexistandcanproduceheightenedscores.Thisresearchdiscountstheutili
4、tyofusingalternatetestformsforthepurposeofreducingpracticeeffects,ataretestinginterval1monthorlonger.TheEffectsofInterval14TheEffectsofIntervalTimeandAlternateformsonPracticeEffectsinSelectionProceduresMeasuresofgeneralmentalability(GMA)arecommonlyusedinallaspectsofAmericani
5、ndustry.Thesemeasuresareusedtoselecttheoptimalapplicantfromanoutsideapplicantpool,ortopromotefromwithin.EmployersusemeasuresofGMAintheselectionprocessbecauseitpredictsjobperformancemorestronglythananyothertrait(Schmidt&Hunter,2004).ThisisbecauselevelofGMAisrelatedtotheacquis
6、itionofjobknowledge,indicatingthatpeoplewhoscorehigheronmeasuresofGMAgainmorejobknowledge,andquicker.WhenapplicantsaregivenatestofGMA,theyareexpectedtosurpassasetcutoffscoreinordertobedeemedqualifiedfortheposition.Whenapplicantsreceiveascorebelowthecutoffpointtheyareoftenall
7、owedtoretakethetestwithinagiveamountoftime,whichismandatedbyeachcompany.Thecurrentstudyisdesignedtoestablishtheappropriatetimeintervalnecessaryforretestingbetweentesttime1and2.Thestudyalsoexaminestheutilityofcreatingmultipleformsofthesametesttoprotectagainstincreasedscoresdu
8、etopracticeeffects.Selectionisaverycostlypartoftheemploymentprocess.Organiz
