The hypothesis that information transfer in a perceptual-motor task is in a large measure a function of the matching sets of stimuli and sets of responses was tested. The results, analyzed in terms of reaction time, errors, and information lost, support the hypothesis. A further experiment was run to test the performance of three selected S-R compatibility effects. It was found that in making a particular set of responses to each of three sets of stimuli, differences in reaction time, movement time, and frequency of errors persisted over the entire 32 days of testing.

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Bec,7usof our limited supply, you are requested to RETURN THIS ,"OPY WHEN IT HAS SERVED YOUR PURPOSE so that J, may be made available to other requesters. our cooperation will be appreciated.

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In the light of the Crash of 1987, should the regulation of financial markets be changed? Charles Seeger of the Chicago Mercantile Exchange, reviews, amongst others, the Brady Commission report on the working of the American markets and concludes that little good would be done by more regulation.