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Psychology alevel
Research methods
Variables/hypotheses
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Created by
Catherine Cochrane
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Cards (10)
IV is what the researcher
changes
in
an
experiment
DV
is what is
measured
in an experiment
Extraneous variables are variables that
are
not
the
IV
but still
affect
the
DV
Participants variables
-differences
between
people
that may affect the DV
Situational variables -
differences
in
the
environment
that may affect the DV
Experimenter variables - the experimenters
conscious
or
unconscious
bias
/
influence
A null hypothesis is a prediction that states
no
relationship
between the
variables
An alternate hypothesis states that there
is
a
difference
between
variables
Non directional hypothesis [
two
tailed
] states a difference but
not
what
it
will
be
Directional hypothesis [
one tailed
] states a difference
and
what
it
will
be