KINE 2049 Chapter 5: Experimental Research Part 6
22 Dec 2016
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Document Summary
Measurements for things that are easy to measure (e. g. jump distance) are more reliable. Some error is introduced anytime a measurement is made. Any obtained score is composed of true score component and an error component: Examples of measurement errors that can reduce reliability: Inconsistent application of instructions and scoring procedures: differences in environmental conditions, changes in equipment used between test administrations. Intraclass: based on variation across trials: one of main differences between reliability coefficients is interpretation of reported reliability. Must have scores from 2 or more trials. Conditions of experiment when scores were obtained and time between trials brings some more error components so you must use various methods of estimating reliability. Value of the component will be b/w 0. 0 and 1. 00, 0. 0 no reliability and 1. 00 perfect reliability. Generally 0. 80 and above is desired but depends on the study.
