scientific approach: a way of using unbiased observation to form and test beliefs. (p. 2-3)
replicate: repeat. A skeptical researcher should be able to repeat (replicate) another
researcher’s study and obtain the same pattern of results. One key to a replicable study is having objective
operational definitions of your variables (p. 8)
operational definition: a “recipe” for how you are going to measure or manipulate a variable; the specific, observable, concrete steps involved in measuring or manipulating that particular factor. (p. 5)
testable: capable of being
disproven, corrected, or revised based on the evidence. (p. 4)
objective: unbiased; based on observable,
physical evidence. (p. 3)