PSYC 226 Ch 3, 1.27.12

PSYC 226 Ch 3, 1.27.12 - Chapter 3 PSYC 226 Principles of...

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Unformatted text preview: Chapter 3 PSYC 226 Principles of measurement Constructs and operational definitions Validity and reliability Scales of measurement Modalities of measurement There is NOT always a one-to-one relationship between your variable and the measure There are MANY ways to measure a variable Theories are the foundation of a scientific study All good science is theory-based Theories are statements about the mechanisms underlying a behavior: Organize our thinking about behavior Make predictions about a behavior Provides a framework for our study Guides our interpretation and application of results Often contain hypothetical or intangible ideas Example: stress affects task performance Constructs are derived from theories Definition: a hypothetical attribute or mechanism that helps explain and predict behavior in a theory...
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This note was uploaded on 02/20/2012 for the course PYSC 226 taught by Professor Levens during the Spring '09 term at South Carolina.

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PSYC 226 Ch 3, 1.27.12 - Chapter 3 PSYC 226 Principles of...

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