Week 5 measurement, scaling, and questionnaire design

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Week 5 measurement, scaling, and questionnaire design

  1. 1. A formalized set of questions for obtaining information from respondents Definition Translate information needed into a set of specific questions Questionnaire must uplift, motivate, and encourage the respondent to become involved in the interview, to cooperate, and to complete the interview Objectives Should minimize response error 1. Specific the information needed 2. Type the interview method Questionnaire 3. Individual question content Assigning numbers or other symbols to characteristics of objects according to certain pre-specified rules 4. Overcome inability & unwillingness to answer Measurement 5. Choose question structure Definition Questionnaire Design Checklist Involves creating a continuum upon which measured objects are located 6. Individual question wording Scaling 7. Determine the order of questions 8. form & layout Classification 9. Reproduce the questionnaire Nominal Ex.: brand, production type (import, local) 10. Pretest Classification Order: diurutkan Test / retest Ordinal Ex.: ranking (1/2/3, education (SD/SMP/SMA) Alternative forms Reliability Internal consistency Classification Order Content Primary Scales of Measurement Interval Distance: jarak bermakna Creation Ex.: IP, TOEFL, rating, temperature Convergent Internal Validity Discriminant Construct Classification Validity Nomological MEASUREMENT, SCALING, Order Scale Evaluation & QUESTIONNAIRE DESIGN Distance Generalization Ratio External Validity Natural Origin: punya nilai 0 (nol) yang berarti tidak memiliki besaran If a measure is perfectly valid, its also reliable Ex.: jumlah uang, satuan ratio keuangan, tinggi badan, panjang, jarak, umur If a measure is unreliable, it cant be perfectly valid Involve direct comparison of stimulus objects If a measure is perfectly reliable, it may or may not be perfectly valid Relationship between reliability & validity Definition Must be interpreted in relative terms and have only ordinal or rank order properties Reliability is necessary, but not sufficient (condition for validity) Paired Comparison Comparative Scales Rank Order Characteristics Classification Constant Sum Judges Research objective Q-Sort Scaling Techniques Rating Each object is scaled independently of the others in the stimulus set Ranking Definition The resulting data are generally assumed to be interval or ratio scaled Categorization Research types Sorting Continuous Rating Scales Selecting a measurement scale Noncomparative Scales Likert Data properties Classification Itemized Rating Scales Semantic Differential Number of dimension Stapel Balanced vs. Unbalanced Forced vs. Non-forced Number of scale point Rater errorsweek 5 Measurement, Scaling, and Questionnaire Design.mmap - 07/04/2011 - Mindjet

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