psychology - define

define aim
what the researcher intends to find out in a research study
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define independent variable
manipulate variable to get different results
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define dependent variable
change you measure, changes as result of IV changing
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define experimental method
manipulate a variable to find if changes cause changes in another variable
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define demand characteristics
high risk that Ppts may change behaviour to line up with the aim of study
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define operationalising
exactly how a variable is going to be manipulated or measured
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difference between control + experimental group
experimental receives variable thats being tested, control doesn't get variable thats tested
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define extraneous variables
any variables other then IV that can effect DV, should be controlled where possible, e.g. surroundings
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define confounding variables
anything other than IV thats affected DV, not sure of true source of changes to DV, unintentional IV, extra variable not accounted for
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define null hypothesis
states no effect of IV on DV, nothing will happen, 'there will be no significant difference...'
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define alternative hypothesis
predicts affect of IV on DV
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define directional hypothesis
gives specific details on how the IV has affected the DV, gives facts e.g. more or less, numbers
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define non-directional hypothesis
says that IV had an effect on DV but specific on how e.g. just says there is a significant difference
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Other cards in this set

Card 2


define independent variable


manipulate variable to get different results

Card 3


define dependent variable


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Card 4


define experimental method


Preview of the front of card 4

Card 5


define demand characteristics


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