Research methods sac 1 Flashcards
IV
The variable that has been systematically manipulated by the researcher.
DV
The variable that is measured as a result of the change made to the independent variable.
Population
Group of interest to research.
Sample
Subset of the population that is used in an experiment to represent the population
Experimental group
Group of participants that are exposed to the IV
Control group
Group of participants that are not exposed to the IV (are used as a point of comparison for the DV)
Random sampling
Where all members of the population have an equal chance of being chosen to participate in the research
Convenience sampling
Using participants who are readily available to participate in the research.
Stratified Sample
Where the proportions in the sample represent the proportions in the population
Random Allocation
Participants all have an equal chance of being placed in either the experimental or control group
Placebo
A fake or inert treatment
Placebo Effect
Where the participant’s behaviour changes due to their expectations that the treatment given will change their behaviour.
Experimenter Effect
The person conducting the experiment may influence the DV unintentionally.
This can be accounted for by using a double blind procedure
Single blind procedure
Where the participants do not know if they are in the experimental or control group (blind to their position)
Double blind procedure
Where neither the person administering the experiment, nor the participants know which is the experimental group and which is the control group . (experimenter should know)