Key terms

Research methods

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  • Created on: 25-04-11 18:59
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Key Term Definition AND Example
Laboratory Experiment A very controlled environment which is not necessarily in lab accurate measurements is
Aims A broad general statement of what a researcher wants to find out.
Operationalisation Process of defining precisely how variables will be realised in a study.
Experimental Hypothesis (H1) Research hypothesis
Null Hypothesis (H0) No relationship
Directional Hypothesis (one 1 aspect affecting the relationship /
Non directional hypothesis More that 1 aspect affecting it
(two tailed)
Independent variable Some aspect of experimental situation that is directly manipulated
Dependent variable The measure or measurement taken by the psychologist of a participant's behaviour in an
Reliability of experiments Controlled environment
Lack of ecological validity Artificial not an everyday situation
Demand characteristics in Cues as to the aim of research which may cause participants to behave in a way that they
experiments would not have done otherwise.
Extraneous variables Any other variable other than they independent variable which could affect a participants
Confounding variables Other uncontrolled factors on the behaviour being measured. (DEPENDENT VARIABLE)
Experimental Conditions A value for the independent variable for which the dependent variable is measured.
Controls Measure the participants and researchers must follow to reduce any bias.
Field Experiment Natural setting, participant are not aware that they are taking part in an experiment. (records
people's reactions)
Natural/ Quasi Experiment The independent variable is not under direct control it is manipulated by an outside agent the
psychologist studies the resulting change.


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