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An apparatus suitable for recording changes in pulse and blood pressure over periods of time as long as six hours is depicted photographically, sketched, and described verbally in detail.
"Four groups of albino rats, 25 animals in each group, were trained on a bar-pressing response. With one group the food pellet reward was given simultaneously with the occurrence of the response. A second group received food after a delay of 2 seconds following the bar response. The third group...
50 normal and 6 color-blind subjects were tested. "Of the normals, 66 percent reported "yellow' to red and green monochromatic binocular stimulation under normal conditions, and 38 percent reported "white' to blue and yellow binocular stimulations. By confining stimulation to the foveal area...
Yacorzynski objects to Skinner's suggestion (see ^W16:^n 3411) that the difference in the selection of patterns in the Zenith experiments by psychotic as compared with control subjects denotes "disintegration of perceptual principles.'
"Twelve nonsense syllables of zero association-value were presented in a planned, random order to two groups of subjects by means of a tachistoscope for .03 second each. Six easily legible but slightly different types of print appeared in each presentation of the list. The usable subjects in the...
"Two groups of subjects were given a series of jig-saw picture puzzles to solve. One of the groups was presented the tasks informally with the avowed purpose of helping the experimenter classify the puzzles for future use. The other group performed the same tasks formally as an "intelligence...
Skinner replies to Yacorzynski's objections to his suggestion that the difference in the selection of patterns in the Zenith experiments by psychotic as compared with control subjects denotes "disintegration of perceptual principles."
"The pitch of a tone sounding in one ear can be changed by introducing a tone of the same frequency in the other ear, provided both tones are of fairly high intensity. The change in pitch, obtained in the present experiment with tones of a 95 decibel loudness level, is in the same direction as...
"Intervening rates, slower or faster than the natural tapping rate, were forced on subjects who were then asked to return to a rate natural to them. Four conditions were investigated: I. Effect on the natural tapping rate when subjects were asked to tap at one-half their natural rate. II-a....
"Two experiments were performed to test the deduction from the two-factor theory of retroactive inhibition which states that proactive inhibition will be less than retroactive inhibition. In the first experiment (Experiment A) 24 subjects learned lists of paired two-syllable adjectives presented...
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