Define “operational definition” of a variable. Give at least two operational definitions of the variables you thought of in the previous review question. Distinguish among positive linear, negative linear, and curvilinear relationships. What is the difference between the nonexperimental method and the experimental method?

DO NOT PLAGIARIZE OR CITE ANYTHING FROM INTERNET. DO NOT COPY FROM THE BOOK

Chapter 5 Learning Goals

Recognize the difference between a conceptual variable and its operationalization.
List three ways psychologists typically operationalize variables: self-report, observational, and physiological.
Classify measurement scales as categorical or quantitative; further classify quantitative variables as ratio, interval, and ordinal.
Describe the difference between the validity and the reliability of a measure.
Identify three types of reliability , and explain when each type is relevant.
Directions

DO NOT PLAGIARIZE!

Use the chapter reviews to help guide you through the reading. As you read, stop to paraphrase the definition of each of the following key terms.

After you finish reading, answer the five review questions below.

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Make sure to rename it and save it to a flash drive, hard drive, or Google documents so you do not lose the information.

Chapter Five Review

Define each of the terms. Write a definition in your own words.

Conceptual definition
Self-report measure
Observational measure
Physiological measure
Categorical variable
Quantitative variable
Ordinal scale
Interval scale
Ratio scale
Reliability
Validity
Test-retest reliability
Interrater reliability
Internal reliability
Correlation coefficient
Slope direction
Strength
Average interitem correlation
Cronbach’s alpha
Face validity
Content validity
Criterion validity
Known groups paradigm
Convergent validity
Discriminant validity
Review Questions

What is a variable? List at least five different variables and then describe at least two levels of each variable. For example, age is a variable. For adults, age has values that can be expressed in years starting at 18 and ranging upward. In an actual study, the age variable might be measured by asking for actual age in years, the year of birth, or providing a choice of age ranges such as 18-34, 35-54, and 55+. Sentence length is a variable. The values might be defined by the number of words in sentences that participants write in an essay.
Define “operational definition” of a variable. Give at least two operational definitions of the variables you thought of in the previous review question.
Distinguish among positive linear, negative linear, and curvilinear relationships.
What is the difference between the nonexperimental method and the experimental method?

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