Psychology 2810 Chapter Notes - Chapter 5: Dependent And Independent Variables, Criterion Validity, Content Validity

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Review: y concepts (constructs) are words y operational definitions describe how concepts will be measured (or manipulated) *skim chapter 5"s discussion of independent, dependent, subject, and confounded variables (p. 120-122) y dependent variable is the variable we measure. *skip nuts and bolts (133-135); case in point and reading between lines (137); and exercises 5. 2- Measurement: using rules to assign values to variability within concepts (or variables) y values can be numbers or names y concepts are words we use to describe things: e. g. , furniture y variability within concepts: e. g. , furniture (chairs, desks); Controlled to avoid confounding variables: categorical variables (values identify distinct categories of things): y values can be names (e. g. , males, females) y values can be numbers (males=1, females=2) numbers don"t have numerical meaning (don"t tell us about quantity) apparent limits: the point indicated by a number (i. e. 1, 2 or some other whole number: represents an estimate of the knowledge of the material.

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