NUR 80A/B Study Guide - Midterm Guide: Criterion Validity, Content Validity, Construct Validity
3 Feb 2016
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Document Summary
Measurement involves rules for assigning numeric values to qualities of objects to designate the quantity of the attribute. Attributes are not constant, change day to day. Measurement requires numbers to be assigned to objects accordingly, not randomly (ie-temp, weight) Data collected through observation or self-report must specify how the numeric values are being assigned. Information is objective: removes guesswork when gathering information, not all quantitative measures are completely objective, but must incorporate rules for minimizing subjectivity, able to obtain genuinely precise information, numbers are less vague than words, can communicate information broadly. Reflects extraneous factors that affect measurement and results. Situational contaminants-measurements can be affected by conditions under which they are produced. Response set biases- characteristics of respondents can interfere with accurate measurement. Transitory personal factors-temporary personal factors (ie-fatigue, illness) can influence motivation or ability to cooperate. Administration variations- alterations in data collection methods from one person to the next.
