The potential role of the Archimedes spiral aftereffect, an illusory negative aftereffect of apparent movement, in the assessment of brain damage has been the subject of investigation by clinicians for over thirty years. The results bearing on its utility have been highly equivocal. This paper reviews the more important studies, identifies salient issues, and suggests directions for research into brain damage using this intriguing procedure.
The increased willingness of Canadian courts to entertain the admission of survey data into evidence in obscenity trials, as a means of establishing community standards of tolerance, has important implications for psychologists. Their special knowledge of human behaviour and research design could be of considerable value to the courts in their deliberations. It is argued that psychologists should be making a more significant contribution through the collection of directly relevant and methodologically sound data, and by apprising themselves of the requirements of expert testimony.
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