... us and how to handle situations in a better way although each situation and the individuals involved in it are unique, some things could be applied to real life. For example parents may learn that reward is better than punishment when handling their kids. Also such theories and research have and will continue to influence laws concerning a number of areas such as capital punishment, pornography, sexual behaviour (for example sexual deviancy) However as most questions like the ones mentioned above relate to the 'psyche' (a totality of inner experience lacking in spatial dimensions) the problem is: How do external observers investigate someone else's psyche systematically if they cannot understand it with their senses? Behaviourism, a movement in psychology, maintains 'we cannot study the psyche at all because its immateriality renders it inaccessible to measurement.' This is where experimentation comes in. An experiment is a 'method of investigation in which the researcher manipulates the situation in order to bring about a change in the ...

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