A matching method of successive approximations and its instrumentation |
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| Authors: | Leif T Svensson Kristoffer Szczygiel |
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| Institution: | 1. Department of Environmental Hygiene, University of Stockholm, The Swedish Environment Protection Board, Box 6706, S-11385, Stockholm, Sweden
2. University of Stockholm, Box 6706, S-11385, Stockholm, Sweden
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| Abstract: | The present paper reports a method of successive approximations. The technique is optimal for matching stimuli with respect to time and all Ss are forced to use the same strategy. The S’s answer to the question of which is more intense, a reference or a matching stimulus, initiates a new matching stimulus according to an algorithm that bisects intervals up or down in successive trials and gives a new matching stimulus to judge. A circuitry that governs the method of successive approximations is reported. The method is exemplified by an experimental set-up for odor intensity matching. |
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