A Study of the Relation of Accuracy to Speed

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Columbia university, 1922 - Difference (Psychology) - 104 pages
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Page 15 - No. l so that everybody gets what he needs and eveiybody is able to pay for it, it would be a disaster to everybody if any single person in the circuit is struck by lightning. The balancing of receipts and deliveries in the circuit can not be achieved by any sort...
Page 13 - From our standpoint the basis of judgment appears to be the memory of a former change of sensation as compared with a present changing sensation.
Page 15 - Munsterburg qualifies his conclusion, therefore, by stating that "the stronger effect of the relative differences of stimuli is constantly influenced by the weaker effect of the absolute differences of the stimuli.
Page 12 - Cattell13 supplement a research on lifted weights with a series of experiments, in one of which (p. 131) the rate of movement was varied so that one weight was lifted four times as rapidly as the other "either by being lifted higher in the same time, or the same distance more quickly.
Page 29 - The consensus of opinion," according to Whipple51 is "that, at least in comparison with many other mental activities, the discrimination of lifted weights is but little affected by practice.
Page 14 - In lifting a weight there is probably a normal rate of change in sensation at which the total amount of change can be judged most accurately, varying with different observers.
Page 24 - A Comparison between Experimental Data and Clinical Results in Manic-Depressive Insanity. Amer. J.
Page 39 - An Analytic Study of the Memory Image and the Process of Judgment in Discrimination of Clangs and Tones. Amer.
Page 42 - Jenaische Zeitschrift, I, 1875, 130. • Perception of Small Differences, p. 131. basis of a few experiments, held that the rate of lift does not increase the probable error. In changes of pressure it is claimed that the more rapid the changes the greater the accompanying distractions.1 It is precisely this change of sensations, occurring from the beginning of the lift until the weight clears its support, that we compare and judge, rather than the totality of sensation after the weight is up. The...
Page 42 - In the experiments hitherto described (weights and lights) the interval was always one second. It is possible that two seconds or longer might be a more favorable interval for comparison, but were the interval further lengthened, the first sensation might be expected to fade from memory.

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