Describe what is involved in the experimental method as it is used in psychology and its limitations

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Describe what is involved in the experimental method as it is used in psychology and its limitations:

In psychology, the experimental method involves the manipulation of some aspect of a situation, and observing the effects this has on a particular behavior. In technical terms, the former is the independent variable (IV), and the latter the dependant variable (DV). Only the investigations which involve the manipulation of the independent variables is part of the experimental method. Basically, in other words, we can say that experimental method is the type of research which involves the investigation of the relationship between two (or more) factors by deliberately intervening one factor in a situation and observing the effects of that modification on other aspects of the situation. Examples of variables that can be used, manipulated and controlled in experimental method are: Behaviors, events or other characteristics that can change or vary in some way. By employing both experimental and control groups in an experiment, investigators are enabled to rule out the possibility that something other than the experimental manipulation produced the results observed during the experiment. This type of research can be broadly divided into three main types: The Laboratory Experiment, The Field