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Chapter 3 Moving from fact to truth: Validity, reliability, and measurement
Three Strange Stories Weird weather Jerry Derryberry and Bubba Skaggs Lucky golf shots
Validity Internal validity External validity Construct validity Conceptual validity
Reliability Temporal consistency / test-retest reliability Internal consistency Interobserver agreement The “more is better rule” of reliability
Measurement Scales Nominal scales Ordinal scales Interval scales Ratio scales The validity of measurement assumptions
Key Terms from Chapter 3 Internal validity External validity Construct validity Conceptual validity Interobserver agreement Interrater reliability Covariation Temporal sequence Confederates Third-variable problem Confounds Internal consistency Temporal consistency Test-retest reliability “More is better” rule Nominal scale Ordinal scale Interval scale Ratio scale Jerry Derryberry, Jr.
Research Methods Chapter 4: Conceptualization & Measurement.
RELIABILITY & VALIDITY What is Reliability? How Can We Measure Reliability? What is Validity? What are the Types of Validity?
1 Measurement PROCESS AND PRODUCT. 2 MEASUREMENT The assignment of numerals to phenomena according to rules.
Collecting Quantitative Data Creswell Chapter 6. Who Will You Study? Identify unit of analysis Specify population Describe sampling approach Class =
Measurement ConceptualizationOperationalization Level of Measurement Validity and Reliability.
RELIABILITY & VALIDITY What is Reliability? What is Reliability?What is Reliability?What is Reliability? How Can We Measure Reliability? How Can We Measure.
Chapter Five Measurement Concepts. Terms Reliability True Score Measurement Error.
Measurement Neuman and Robson Ch. 6. What is it? The process of creating measurable concrete variables from abstract concepts Extends the senses (empirical)
Chapter 5 Conceptualization, Operationalization, and Measurement.
Measurement & Attitude Scaling Chapter 10. Measurement Scaling Concept Operational Definition Conceptual Definition Rules.
Chapter 6 Just the Truth: An Introduction to Understanding Reliability and Validity Part II igma Freud & Descriptive Statistics.
Defining, Measuring and Manipulating Variables. Operational Definition The activities of the researcher in measuring and manipulating a variable.
Business Research Method Measurement, Scaling, Reliability, Validity M.Com-II.
Operationalizing Concepts Issues in operationally defining your concepts, validity, reliability and scales.
5/15/2015Marketing Research1 MEASUREMENT An attempt to provide an objective estimate of a natural phenomenon ◦ e.g. measuring height ◦ or weight.
Conceptualization and Operationalization. Conceptualization and Concepts Conceptualization is a process of defining the agreed meaning of the terms used.
Estimating Reliability Test-Retest Coefficient Parallel-Forms Coefficient Internal Consistency Coefficient Interrater (interobserver) Reliability © 2015.
Measurement Concepts. CONSTRUCT VALIDITY OF MEASURES Indicators of Construct Validity Face validity Aggression questionnaire Not enough to really determine.
Introducing Communication Research 2e © 2014 SAGE Publications Chapter Five Measurement: Research Using Numbers.
Conny’s Office Hours will now be by APPOINTMENT ONLY. Please her at if you would like to meet with.
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SOCI 2003B: Sociological Methods Colleen Anne Dell, Ph.D. Carleton University, Department of Sociology & Anthropology Canadian Centre on Substance Abuse.
McGraw-Hill/Irwin Business Research Methods, 10eCopyright © 2008 by The McGraw-Hill Companies, Inc. All Rights Reserved. Chapter 11 Measurement.
Data Analysis. Quantitative data: Reliability & Validity Reliability: the degree of consistency with which it measures the attribute it is supposed to.
From Concepts to Variables Sociology 690 – Measurement.
4/25/2015 Marketing Research 1. 4/25/2015Marketing Research2 MEASUREMENT An attempt to provide an objective estimate of a natural phenomenon ◦ e.g.
Concepts, Operationalization, & Measurement Dr. Guerette.
CHAPTER SIX THEORIES, CONCEPTS AND VARIABLES. Research that is not theoretically informed, not grounded in the existing body of knowledge, or of the ‘shotgun’
MEASUREMENT CONCEPTS © 2012 The McGraw-Hill Companies, Inc.
Chapter 6 Measuring Instruments. ALL VARIABLES ARE NOT MEASURED THE SAME Nominal Variables Ordinal Variables Interval Variables Ratio Variables.
Measurement Cameron G. Thies University of Iowa. The Measurement Process What is measurement? – The process of assigning numbers or labels to units of.
12-1 Chapter 12 Measurement Learning Objectives Understand... distinction between measuring objects, properties, and indicants of properties similarities.
Sampling Basics 2011, 9, 13. Last Class: Measurement Scale of measurement –Nominal scale –Ordinal scale –Interval-ratio scale Reliability: Free of.
Exploring Marketing Research William G. Zikmund Chapter 13: Measurement.
Measurement and Scaling By: Dr Manoj Kuamr. Measurement and Scaling In the field of business research, a researcher tries to gather information through.
Chapter 7 Reliability and Validity in Experimental Research ♣ ♣ Introduction Relationship between Reliability and Validity Experimental Reliability.
Scales of Measurement What is a nominal scale? A scale that categorizes items What is an ordinal scale? A scale that categorizes and rank orders items.
S519: Evaluation of Information Systems Social Statistics Inferential Statistics Chapter 16: reliability and validity.
Chapter 3 Selection of Assessment Tools. Council of Exceptional Children’s Professional Standards All special educators should possess a common core of.
Chapter 7 Measuring Instruments. ALL VARIABLES ARE NOT MEASURED THE SAME Nominal Variables Ordinal Variables Interval Variables Ratio Variables.
Power Point Slides by Ronald J. Shope in collaboration with John W. Creswell Chapter 6 Collecting Quantitative Data.
Ch 5: Measurement Concepts. Reliability Reliability refers to the consistency or stability of a measure of behavior [p92] If you weighed yourself.
Chapter 9 For Explaining Psychological Statistics, 4th ed. by B. Cohen 1 What is a Perfect Positive Linear Correlation? –It occurs when everyone has the.
Experimental Research. An experiment is a scientific investigation that sets out to determine the cause and effect of two or more variables. A “good”
Graziano & Raulin (2000) Data and the Nature of Measurement Graziano and Raulin Research Methods: Chapter 4.
Asking Good Questions Chapter 7. Scales of Measurement Nominal Nominal Ordinal Ordinal Interval Interval Ratio Ratio.
Taking Stock Of Measurement. Basics Of Measurement Measurement: Assignment of number to objects or events according to specific rules. Conceptual variables:
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