01:920:311 Lecture Notes - Lecture 7: Face Validity, Vise
18 Mar 2016
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Recap: measuring things decide what we want to measure (conceptualize), and then how to measure (operationalize: observations, records, surveys, etc. Measurements are reliable if they are consistent and accurate: things are reliable if you get the same and accurate results every time. How many cups of coffee you had today (not in february hard to answer: methods: on measuring worker morale. How happy, energetic, motivated, etc. they seem (looks, interaction/joking, voice tone) : would get different results each day/vary on how observer feels (not consistent results) Method 2: numbers from records, gathered each week. ^ like # of grievances, hours worked, time arrive/leave, time off, etc. ^ reliable since records numbers are constant. #1 reliability challenge is it clear what we are measuring: whether you are using observations, records or doing a survey (clarity. Make questions clear (fowler article do you exercise and butter questions) Even when questions are clear things can be unreliable still: #2 observers and their subjectivity.
