What makes a laboratory experiment

Examples of order effects include:. McLeod, S. Experimental method. Simply Psychology. Toggle navigation. Saul McLeod , published The experimental method involves the manipulation of variables to establish cause and effect relationships. Key Terminology. Ecological validity. The degree to which an investigation represents real-life experiences. Experimenter effects. Demand characteristics. Independent variable IV. Dependent variable DV.

Variable the experimenter measures. This is the outcome i. Extraneous variables EV. Experiments look for the effect that manipulated variables independent variables, or IVs have on measured variables dependent variables, or DVs , i.

Laboratory experiments pay particular attention to eliminating the effects of other, extraneous variables, by controlling them i. This makes it more likely for researchers to find a causal effect, having confidence that no variables other than changes in an IV can affect a resulting DV.

Laboratory experiments are the most heavily controlled form of experimental research. Participants can also be randomly allocated to experimental conditions, to avoid experimenter bias i. Company Reg no: VAT reg no Please enable Javascript on your browser to continue.

What makes a good laboratory experiment? Bell, E. Download PDF. Share Full Text for Free. Web of Science. Let us know here. System error. Please try again!

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