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When carrying out a piece of research, a psychologists main concern is looking at the effects of just the IV on the DV, in order to do this, all other extraneous variables (EVs) need to be controlled.

There are three experimental methods in the field of psychology; Laboratory, Field and Natural Experiments. Each of the experimental methods holds different characteristics in relation to; the [...]

In Psychology, hypotheses are predictions made by the researcher about the outcome of a study. The research can chose to make a specific prediction about what they feel will happen in their [...]