... experiments is that it is easier to control confounding variables; also another advantage of laboratory is that they can collect a large amount of data that is detailed. On the other hand advantages of field experiments is that behaviour is natural with know demand characteristics to effect quality of results. Field experiments have a greater external validity. Another type of experiment is Quasi, this type of experiment resembles some of the characteristics of an experiment but not with the quality of a "true" experiment. Draw backs with this experiment are that there can be know direct manipulation, so the experimenter doesn't have complete control, also random allocation isn't possible. Advantages of Quasi is that participants behave naturally, it can investigate IV that would be unethical to manipulate, disadvantages are that Iv may have more than one effect for example, weather and temperature, this type of experiment also requires ethical sensitivity. Natural experiment ...

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