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Research methods
IV,DV and Hypothesis
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Cards (10)
Independent variable (IV)
What is changed by the
experimenter
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Dependent variable (
DV
)
What the experimenter
measures
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Aim
A statement/question about what you are
intending
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Types of hypotheses
Null
hypothesis
Experimental
hypothesis
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Null hypothesis
Statement of
no difference
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Experimental hypothesis
Testable statement of the effect of an
IV
on a
DV.
What the researcher believes to be true
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Types of experimental hypotheses
Directional
/
one
tailed
Non-directional
/
two
tailed
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Directional
hypothesis
States the kind of
difference
you are expecting
between
the groups
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Non-directional
hypothesis
Simply states that there will be a
difference
between groups
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Writing a good hypothesis
Should always include both conditions of the
IV
Must be
clear
and
testable
Written in the
future
tense
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