Validity & Threats in Educational Research: Designs, Variables, Measures, Analysis, Evalua, Quizzes of Health sciences

Download Validity & Threats in Educational Research: Designs, Variables, Measures, Analysis, Evalua and more Quizzes Health sciences in PDF only on Docsity! TERM 1 Internal Validity DEFINITION 1 Degree to which the program caused the change that was measured. TERM 2 Threats to Internal Validity DEFINITION 2 HistoryMaturationTestingInstrumentationStatistical regressionSelectionMortalityDiffusion/ imitation of treatmentsCompensatory rivalry TERM 3 Purposes of Evaluation DEFINITION 3 Determine effectivenessImprove programDemonstrate worthCompare programsMeet funding requirementsProvide program information TERM 4 Experimental DEFINITION 4 Random assignment to experimental and control groupOffers great control over variablesmeasures both groupsHighly defensible evidence of effectivenessPre-test/ post-testPost- test onlytime series TERM 5 Quasiexperimental DEFINITION 5 No random assignment to groupscannot control for all variablescomparisons are made on experimental and comparison groupsoffers supporting evidence of effectivenesspre-test/post-testtime series TERM 6 Non-experimental DEFINITION 6 No comparison or control groupslittle control over variablespre-test/post-testtime series TERM 7 Time Series DEFINITION 7 several measurements over time before and after the programcan be used to examine differences in program effects over time TERM 8 t-test DEFINITION 8 Used to study group difference, when the dependent variable is interval or ratio in naturecomparing two means TERM 9 Dependent Samples t-testing DEFINITION 9 comparing same sample taking different tests TERM 10 Independent Samples t-testing DEFINITION 10 Comparing two different groups taking the same test TERM 21 Best Way to Analyze Data DEFINITION 21 Evaluation QuestionsTypes of data collectedAudience who gets resultsLevel of measurements TERM 22 Measures of Central Tendency DEFINITION 22 Mean, median, mode TERM 23 Mean DEFINITION 23 arithmetic averageunduly influenced by outliers- in set of data, a value so far removed from other values that its presence cannot be attributed to random combination of chance causes TERM 24 Median DEFINITION 24 Midpointwhen there are outliers, this is the measure of choice TERM 25 Mode DEFINITION 25 Score that occurs most frequentlymay be more than 1 TERM 26 Choosing Evaluation Design DEFINITION 26 Time limitsFinancial limitsNumber of participantsQualitative v quantitativeStatistical expertiseWill findings be generalizedAre validity and reliability issuesIs comparison group available/ can you randomize TERM 27 Evaluation Report DEFINITION 27 Critically Analyze Results- takes discipline, review all evaluation resultsTangible Product- justification in face of lack of support; why evaluation was valuableEvidence- convince of value; proof of careful developmentRecord- lessons learnedAssistance to Others- design programs that are effective, use of program by others, reputationFoundation- don't start from scratch; include test instruments TERM 28 Independent Variable DEFINITION 28 Controlled by evaluator TERM 29 Dependent Variable DEFINITION 29 OutcomeInfluenced by IV