How Psychologists do Research Lecture

How Psychologists - Psychology Lecture How Psychologists Do Research Chapter 2 What makes psychological research scientific Precision Skepticism

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Psychology Lecture 9/10/10 – 9/17/10 How Psychologists Do Research: Chapter 2 What makes psychological research scientific? Precision Skepticism Reliance on empirical evidence Willingness to make “risky predictions” Openness Precision Theories - organized systems of assumptions that purport to explain phenomena and their interrelationships Hypothesis - attempt to predict or account for a set of phenomena; specify relationships among variables, and are empirically tested Operational definitions - specify how phenomena in question are to be observed or measured Skepticism Scientists do not accept ideas on faith or authority Skepticism means treating conclusions, both old and new, with caution Reliance on empirical evidence A scientist relies on empirical evidence to determine whether a hypothesis is true Willingness to make risky predictions Principle of falsifiability o A scientific theory must make predictions specific enough to confirm and/ or disconfirm the theory o The theory must predict not only what will happen, but also what will not happen Confirmation bias o Tendency to look for or attend to only information that confirms one’s own
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This note was uploaded on 02/05/2011 for the course PS 101 taught by Professor Hoffman during the Fall '07 term at BU.

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How Psychologists - Psychology Lecture How Psychologists Do Research Chapter 2 What makes psychological research scientific Precision Skepticism

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