Reliability and Validity 0.0 / 5 ? Sports Scienceresearch and statisticsUniversityNone Created by: Matt CatterallCreated on: 15-11-17 18:01 Validity is the appropriateness of a test in measuring what it is designed to measure 1 of 32 Relibility the degree to which a test produces the same scores when applied in the same circumstances 2 of 32 Objectivity the degree to which different observers agree on measurements 3 of 32 what are the sub-topics of validity logical (face and content), construct, statistical (concurrent and predictive) 4 of 32 Logical - face validity obviously valid like measuring height (not always externally valid) 5 of 32 Logical - content validity measures ALL intervening variables (also subjective) 6 of 32 Statistical- concurrent validity infers the test gives similar results to other validated test e.g. incremental treadmill protocol and MSFT for VO2max 7 of 32 Statistical - predictive validity externally valid, helpful in the future 8 of 32 Construct Validity the test measureswhat it's supposed to as well as what should exist intangibly e.g. rivalry 9 of 32 maturation - changes in the DV over time pre-test post-test randomised group comparison 10 of 32 history - unplanned events between meaurements e.g. extra exercise control extraneous variables 11 of 32 pre-testing - interactive effects like habituation solomon 4 group design 12 of 32 statistical regression - initial extreme scores likely to be followed by less extreme effective sampling 13 of 32 instrumentation - uncalibrated equipment calibrate equipment 14 of 32 selection bias - groups for comparison aren't equivalent random assignment 15 of 32 experimental mortality - subject drop-out recruit suitable participants 16 of 32 inadequate description of study design - unreplicable comprehensive methodology 17 of 32 biased sampling - doesn't reflect the target population random sample of target population 18 of 32 Hawthorne Effect - DV affected due to being recorded control the lab environment 19 of 32 demand characteristics - participants discover study purpose double blind trials 20 of 32 operationalisation - DV must have relevance to the outside world choose DV carefuly 21 of 32 what is reliability a pre-requisite of validity, results must be repeatable 22 of 32 what are the 3 types of reliability relative, absolute and rater 23 of 32 what is relative reliability small fluctuations in results but retested individuals maintain position in the group 24 of 32 what is absolute reliability whether test-retest within individuals is exactly the same (down to degree of accuracy) 25 of 32 what is Intrarater reliability consitency of observer's measurement 26 of 32 what is Interrater reliability agreement between different raters 27 of 32 fatigue give more time between tests 28 of 32 habituation familiarise subjects prior to test 29 of 32 non-standardisation of procedures control extraneous variables 30 of 32 precision of measurements be precise but not too precise 31 of 32 ultimately, reliability is dependent on what? the degree of measurement error 32 of 32
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