The Measurement Process

2/19/99

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Table of Contents

The Measurement Process 

Measurement errors- Random; Systematic 

Indicators- item; composite measures 

Types of variables: discrete; continuous 

Nominal  

Ordinal 

Interval 

Ratio 

Evaluating the utility of single or composite measures- 

Reliability 

Test-Retest 

Multiple Forms 

Split-Half Approach 

Inter-rater reliability 

Validity 

Face 

Content 

Empirical validity (+.50) 

Criterion-related: concurrent; predictive 

Construct

 Author: Computing Services 

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