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Contrast tests of interaction hypothesis.
Psychological Methods, 1997This article argues for the use of contrasts to test a priori interaction hypotheses in 2-way analysis of variance designs. It focuses on 3 underused types of interaction contrast tests: a "matching" pattern for cognate levels of row and column factors; the "qualitative quadratic," for monotonic profiles of means in the same direction but with opposed ...
R. Abelson, Deborah A. Prentice
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Contrast media reactions: data analysis and hypothesis.
Radiology, 1980Two hundred and twenty-eight deaths due to the use of contrast media are reported, including 15 from intravenous cholangiography, 69 from angiography, 140 from urography and four other. The causes are analyzed and the various explanations for reactions to contrast media are considered.
A. Lalli
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Reactions to contrast media: testing the CNS hypothesis.
Radiology, 1981Sodium iothalamate was injected intravenously into mice to test the hypothesis that reactions to contrast media are controlled by the central nervous system. Particular emphasis was placed on (a) the effect of the limbic portion of the brain on the hypothalamus and (b) the outflow through the autonomic nervous system.
A. Lalli, R. Greenstreet
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NeuroReport, 2002
The hypothesis of a magnocellular channel deficit in dyslexia was tested. Subjects were 10-year-old dyslexics and normal readers. Psychophysical thresholds for luminance and chromatic contrasts were estimated using black and white and red and green sinusoidal gratings of various spatial frequencies, presented in static and dynamic conditions (drift and
D. Bednarek, A. Grabowska
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The hypothesis of a magnocellular channel deficit in dyslexia was tested. Subjects were 10-year-old dyslexics and normal readers. Psychophysical thresholds for luminance and chromatic contrasts were estimated using black and white and red and green sinusoidal gratings of various spatial frequencies, presented in static and dynamic conditions (drift and
D. Bednarek, A. Grabowska
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Prominence, Contrast, and the Functional Load Hypothesis: An Acoustic Investigation
, 2016I. Vogel +2 more
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A Hypothesis-Testing Approach Toward Identifying Active Contrasts
Technometrics, 1996The problem of identifying the active contrasts in an unreplicated fractional factorial design is approached from a hypothesis-testing point of view. The null hypothesis that all contrasts are inactive is first tested and, if rejected, the active contrasts causing rejection are identified and estimated.
J. H. Venter, S. J. Steel
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THE CONTRASTIVE ANALYSIS HYPOTHESIS AND SPELLING ERRORS
Language Learning, 1970The implications of three versions of the contrastive analysis hypothesis (CAH) are explored. The strong and weak forms are rejected in favor of a more moderate version which predicts the results of a spelling error analysis on the dictation section of the UCLA placement examination in English as a second language.
John W. Oller, Seid M. Ziahosseiny
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The Contrastive Analysis Hypothesis
TESOL Quarterly, 1970The claim that the best language-teaching materials are based on a contrast of the two competing linguistic systems has long been a popular one in language teaching. It exists in strong and weak versions, the strong one arising from evidence from the availability of some kind of metatheory of contrastive analysis and the weak from evidence from ...
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Contrast effects in attitude judgment: An examination of the accentuation hypothesis.
Journal of Personality and Social Psychology, 1980C. Judd, J. Harackiewicz
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