Psychology basic key words 0.0 / 5 ? PsychologyCognitive PsychologyResearch methods and techniquesCore studiesASEdexcel Created by: jaaaz_vCreated on: 29-11-15 20:05 Demand characteristics When people change their behavior to what they think someone wants to see 1 of 15 Independent variable (IV) The variable being changed in an experiment 2 of 15 Dependent variable (DV) The variable being measured during an experiment 3 of 15 Extraneous variable (EV) These are variables other than the Iv that could affect the DV and so need to be controled 4 of 15 Validity Whether the experiment is a true measure of what you intended to measure 5 of 15 Participant Someone who is used in an experiment 6 of 15 Volunteer (self selecting) sample Where the participants volunteer to take part in an experiment 7 of 15 Stratified sampling Where participants are selected in proportion to the qualities of the target population 8 of 15 Random Sampling When everyone in the population has an equal chance of being selected to be part of a sample 9 of 15 Opportunity sample When participants who are ready and willing at the time of the experiment take part in the experiment 10 of 15 Reliability Whether the results of an experiment are reproducible 11 of 15 Independent measures design Where each participant only takes part in one condition of the experiment 12 of 15 Matched pairs design When participants are paired depending on similar qualities and one of the pairs takes part in either condition of the study 13 of 15 Ethical guidelines The British Psychological Society 9BPS) have put forward guidelines that all studies should follow. 14 of 15 Operationalise When something is made measurable in an experiment. 15 of 15
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