PSYC 2001 Chapter Notes - Chapter 3: External Validity, Internal Validity, Theoretical Definition
14 Feb 2018
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Chapter 3 3 claims, 4 validities: interrogation tools for consumers of research. Variables are concepts of interest that vary and form the core of psychological research. There must be 2 levels (or values) for every variable. Nearly 60% of teens text while driving: variable texting while driving, level 1 whether the person does text while driving, level 2 whether the person does not text while driving. Measured variable o(cid:374)e (cid:449)ho"s le(cid:448)els are si(cid:373)ply o(cid:271)ser(cid:448)ed a(cid:374)d re(cid:272)orded. Manipulated variable a variable a searchers controls, usually by assigning participants to the different levels of that variable. Taking a conceptual variable (or construct), which are abstract concepts such as shyness or intelligence, and turning it onto an operational definition. In order to test a hypothesis, researchers have to create an operational definition of the variables and turn the concept of interest into a measured or manipulated variable.
