psychology - define 0.0 / 5 ? PsychologyResearch methods and techniquesA2/A-levelAQA Created by: MollySmith2002Created on: 13-10-19 17:46 define aim what the researcher intends to find out in a research study 1 of 13 define independent variable manipulate variable to get different results 2 of 13 define dependent variable change you measure, changes as result of IV changing 3 of 13 define experimental method manipulate a variable to find if changes cause changes in another variable 4 of 13 define demand characteristics high risk that Ppts may change behaviour to line up with the aim of study 5 of 13 define operationalising exactly how a variable is going to be manipulated or measured 6 of 13 difference between control + experimental group experimental receives variable thats being tested, control doesn't get variable thats tested 7 of 13 define extraneous variables any variables other then IV that can effect DV, should be controlled where possible, e.g. surroundings 8 of 13 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 9 of 13 define null hypothesis states no effect of IV on DV, nothing will happen, 'there will be no significant difference...' 10 of 13 define alternative hypothesis predicts affect of IV on DV 11 of 13 define directional hypothesis gives specific details on how the IV has affected the DV, gives facts e.g. more or less, numbers 12 of 13 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 13 of 13
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