2methods - Overview and Methods Theories and their roles...

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1 Overview and Methods © Theories and their roles Experiments Approaches to cognition Methods Example: approaching an issue Why do people forget? Decay vs. Interference Both predict people forget with time How would one tell which is right? Find a situation with different predictions: Do people forget as much when asleep? Decay - Yes; Interference -- No Does forgetting depend on similarity of information? Decay - No; Interference -- Yes Theory Organized body of general explanatory principles about a phenomenon Role Organize current results - provide coherence, explanation Predict new results -- guide research
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2 Interplay between theories and data THEORY induction deduction DATA Points about theories All theories are tentative New data, new measurements Theories in Cognition Cannot usually “see” what is going on Theories involve inferences - can be abstract Points about theories Making correct prediction is not the same as being true Alternative explanations Can often find some differences Observation Theory
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3 Ross’s Observation Students who sit in the front tend to get higher grades than other students. Assume it is true.
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This document was uploaded on 02/24/2010.

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2methods - Overview and Methods Theories and their roles...

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