Chapter 11

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# Chapter 11 - PowerPoint PPT Presentation

Chapter 11. Measurement. Learning Objectives. Understand . . . The distinction between measuring objects, properties, and indicants of properties. The similarities and differences between the four scale types used in measurement and when each is used.

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Presentation Transcript

### Chapter 11

Measurement

Learning Objectives

Understand . . .

• The distinction between measuring objects, properties, and indicants of properties.
• The similarities and differences between the four scale types used in measurement and when each is used.
• The four major sources of measurement error.
• The criteria for evaluating good measurement.
Pull Quote
• “You’re trying too hard to find a correlation here. You don’t know these people, you don’t know what they intended. You try to compile statistics and correlate them to a result that amounts to nothing more than speculation.”
• Marc Racicot, former governor of Montana
• and chairman of the Republican Party
Measurement

Select

measurable phenomena

Develop a set of

mapping rules

Apply the mapping rule

to each phenomenon

Types of Scales

Nominal

Ordinal

interval

Ratio

Levels of Measurement

Nominal

Classification

Ordinal

interval

Ratio

Nominal Scales

Mutually Exclusive

Collectively Exhaustive Categories

Classification Only

Levels of Measurement

Nominal

Classification

Ordinal

Classification

Order

interval

Ratio

Ordinal Scales

Nominal Scale Characteristics

Order

Implies greater than or less than

Levels of Measurement

Nominal

Classification

Ordinal

Classification

Order

interval

Classification

Distance

Order

Ratio

Interval Scales

Ordinal Scale Characteristics

Equality of interval

Equality of distance between numbers

Levels of Measurement

Nominal

Classification

Ordinal

Classification

Order

interval

Classification

Distance

Order

Ratio

Classification

Distance

Order

Natural Origin

Ratio Scales

Interval Scale Characteristics

Absolute Zero

Sources of Error

Respondent

Situation

Measurer

Instrument

Validity

Reliability

Practicality

Evaluating Measurement Tools

Criteria

Validity Determinants

Content

Criterion

Construct

Increasing Content Validity

Content

Literature Search

Etc.

Expert Interviews

Question Database

Group Interviews

Validity Determinants

Content

Construct

Increasing Construct Validity

New measure of trust

Known measure of trust

Empathy

Credibility

Validity Determinants

Content

Criterion

Construct

Judging Criterion Validity

Relevance

Criterion

Freedom from bias

Reliability

Availability

Reliability Estimates

Stability

Internal

Consistency

Equivalence

Reliability Estimates

Stability

Internal

Consistency

Equivalence

Reliability Estimates

Stability

Internal

Consistency

Equivalence

Practicality

Economy

Convenience

Interpretability

Key Terms
• Internal validity
• Interval scale
• Mapping rules
• Measurement
• Nominal scale
• Objects
• Ordinal scale
• Practicality
• Properties
• Ratio scale
• Reliability
• Equivalence
• Internal consistency
• Stability
• Validity
• Construct
• Contents
• Criterion-related

### Chapter 11

Snapshot: Tivo Households

Emmy winning shows

View involvement increases

Snapshot: Talent Analytics

“Initially, many [HR] assessments were used primarily for pre-hire selection; today, assessment providers offer strategic resources for global organizations that want to build their overall knowledge of their employees beyond hiring—for development, promotion, internal mobility and succession planning.”

Pull Quote

“The only man who behaved sensibly was

my tailor; he took my measurement anew

every time he saw me, while all the rest

went on with their old measurements and

expected them to fit me.”

George Bernard Shaw

playwright and essayist

PulsePoint: Research Revelation

32.5

The percent of corporations using or planning to use cloud computing—using software and server space via Internet sources.

Measurement