discussion questions for ch 4 Flashcards

1
Q

how to define and judge a variable

A

event, situation, behavior or individual characteristic that varies

any variable must have two or more levels or values (extraversion/intoversion)

we measure them through operational definition (it ust have this to be studied empirically)

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2
Q

operation definition of a variable

A

set of procedures used to measure or manipulate variable

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3
Q

construct validity

A

sees if operational definition is measuring waht it intends to measure

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4
Q

What do different values of the Pearson correlation coefficient, r, mean?

A

measures strength of a linear relationship between two variables

a perfect positive linear relationship is r=1

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5
Q

no relationship

A

0-0.05

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6
Q

weak relationship

A

0.1-0.3

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7
Q

moderate relationship

A

0.3-0.5

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8
Q

strong relationship

A

more than 0.5

more often-more than 0.7

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9
Q

Curvilinear relationship

A

is a type of relationship between two variables where as one variable increases, so does the other variable, but only up to a certain point, after which, as one variable continues to increase, the other decreases.

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