mcgraw-hill/irwin business research methods, 10e © 2008 the mcgraw-hill companies, inc. all rights...
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McGraw-Hill/IrwinBusiness Research Methods, 10e
© 2008 The McGraw-Hill Companies, Inc. All Rights Reserved.
Chapter 12Chapter 12
MeasurementMeasurement
ScalesScales
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Learning Objectives
Understand…
• The nature of attitudes and their relationship to behavior.
• The critical decisions involved in selecting an appropriate measurement scale.
• The characteristics and use of rating, ranking, sorting, and other preference scales.
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PulsePoint: Research Revelation
68 The percent that say they are ‘generally positive’ or ‘somewhat positive’ about the contributions that large corporations make to the public good.
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Measurement Scales
“All survey questions must be actionable if you want results.”
Frank Schmidt, senior scientistThe Gallup Organization
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The Scaling Process
Some business scales measure attitudes.
Attitudes have 3 parts to them.
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Nature of Attitudes
CognitiveI think oatmeal is healthier
than corn flakes for breakfast.
Affective
Behavioral
I hate corn flakes.
I intend to eat more oatmealfor breakfast.
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Issues in Scaling
Research objectives Response types
Data propertiesNumber of dimensions
Forced or unforcedchoices
Balanced or unbalanced
Rater errorsNumber of scale points
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Response Types
Rating scaleRating scale
Ranking scaleRanking scale
CategorizationCategorization
SortingSorting
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Number of Dimensions
Unidimensional
Multi-dimensional
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Balanced or Unbalanced
Very badBadNeither good nor badGoodVery good
PoorFairGoodVery goodExcellent
How good an actress is Angelina Jolie?
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Forced or Unforced Choices
Very badBadNeither good nor badGoodVery good
Very badBadNeither good nor badGoodVery goodNo opinionDon’t know
How good an actress is Angelina Jolie?
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Number of Scale Points
Very bad Bad Neither good nor bad Good Very good
Very bad Somewhat bad A little bad Neither good nor bad A little good Somewhat good Very good
How good an actress is Angelina Jolie?
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Rater Errors
Central Tendency
Leniency
Halo Effects
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Simple Category Scale
I plan to purchase a MindWriter laptop in the 12 months.
Yes No
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Multiple-Choice, Single-Response Scale
What newspaper do you read most often for financial news? East City Gazette West City Tribune Regional newspaper National newspaper Other (specify:_____________)
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Multiple-Choice, Multiple-Response Scale
What sources did you use when designing your new home? Please check all that apply.
Online planning services Magazines Independent contractor/builder Designer Architect Other (specify:_____________)
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Likert Scale
The Internet is superior to traditional libraries forcomprehensive searches.
Strongly disagree Disagree Neither agree nor disagree Agree Strongly agree
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Semantic Differential
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Adapting SD Scales
Convenience of Reaching the Store from Your LocationNearby ___: ___: ___: ___: ___: ___: ___: Distant
Short time required to reach store ___: ___: ___: ___: ___: ___: ___: Long time required to reach store
Difficult drive ___: ___: ___: ___: ___: ___: ___: Easy Drive
Difficult to find parking place ___: ___: ___: ___: ___: ___: ___: Easy to find parking place
Convenient to other stores I shop ___: ___: ___: ___: ___: ___: ___: Inconvenient to other stores I shop
Products offeredWide selection of different
kinds of products ___: ___: ___: ___: ___: ___: ___:Limited selection of differentkinds of products
Fully stocked ___: ___: ___: ___: ___: ___: ___: Understocked
Undependable products ___: ___: ___: ___: ___: ___: ___: Dependable products
High quality ___: ___: ___: ___: ___: ___: ___: Low quality
Numerous brands ___: ___: ___: ___: ___: ___: ___: Few brands
Unknown brands ___: ___: ___: ___: ___: ___: ___: Well-known brands
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SD Scale for Analyzing Actor Candidates
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Numerical Scale
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Multiple Rating List Scales
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Stapel Scales
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Constant-Sum Scales
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Graphic Rating Scales
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Ranking Scales
• Paired-comparison scale
• Forced ranking scale• Comparative scale
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Paired-Comparison Scale
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Forced Ranking Scale
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Comparative Scale
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Sorting
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Key Terms
• Attitude• Balanced rating scale• Categorization• Comparative scale• Constant-sum scale• Cumulative scale• Error of central
tendency• Error of leniency
• Forced-choice rating scale
• Forced ranking scale• Graphic rating scale• Halo effect• Item analysis• Likert scale• Multidimensional scale
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Key Terms
• Multiple-choice, multiple-response scale
• Multiple-choice, single-response scale
• Multiple rating list • Numerical scale• Paired-comparison
scale
• Q-sort• Ranking scale• Rating scale• Scaling• Scalogram analysis• Semantic differential• Simple category scale
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Key Terms
• Sorting• Stapel scale• Summated rating scale
• Unbalanced rating scale• Unforced-choice rating
scale • Unidimensional scale