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501.
Anthony J. Adams Brian Brown Gunilla Haegerstrom-Portnoy Merton C. Flom Reese T. Jones 《Attention, perception & psychophysics》1976,20(2):119-124
Significant dose-related impairments in hue discrimination on the Farnsworth-Munsell 100 hue test were produced by acute doses of alcohol and marijuana. The impairment of color discrimination was predominantly located in the blue region of the color circle and resembles that seen in acquired color vision defects associated with retinal pathology. The transient nature of the reduced color discrimination raises practical problems in tasks which require stable color perception. 相似文献
502.
Martin R. Adams 《Journal of Fluency Disorders》1974,1(3):23-29
This study evaluated the hypothesis that the amount of stuttering adaptation increases as the number of requirements for the prompt onset of phonation and complete articulatory constriction across passages decreases. To test this prediction, three special reading passages were constructed. The number of requirements for the quick initiation of phonation and complete articulatory constriction decreased from passages I to II to III. Eleven stutterers read each passage five times. Of these individuals, seven exhibited the well-known adaptation effect on all three selections. However, adaptation increased significantly from passage I to II to III. Among the remaining four subjects, three failed to adapt on passage I which contained the greatest number of requirements for the prompt onset of phonation and complete articulatory constrictions. These results were interpreted as supporting the hypothesis under test. 相似文献
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506.
Martin R. Adams 《Journal of Fluency Disorders》1983,8(2):147-153
Considering the long history of research into stuttering, it is surprising that so little time has been devoted to the study of factors that contribute to the success of therapy. Even less attention has been devoted to uncovering forces that promote poor treatment outcomes. In this article and the companion piece that follows it, an attempt has been made to delineate what may prove to be predictors of unsuccessful therapy. In this first of the two articles, the focus in on the identification of patient, extraclinical, and clinician variables that could act to negate progress during the establishment phase of treatment. 相似文献
507.
The present study was undertaken to determine whether pacing and masking would facilitate improved speech initiation times (SITs) both for stutterers and for nonstutterers. All subjects were tested in control, pacing, and masking conditions. The results showed that both stutterers and nonstutterers (1) improved their SITs during the pacing condition as compared with the control condition (p = 0.01), (2) had slower SITs in the masking condition as compared with the control condition (p = 0.05), and (3) had faster SITs during the pacing as compared with the masking condition (p = 0.01). The SIT between-group findings demonstrated that stutterers were slower than nonstutterers across all SIT conditions (p = 0.08). The discussion of these results centers on the facilatory nature of novel stimulation in modifying speech-system functioning. 相似文献
508.
The hypothesis was tested that pre-menstrual and post-menstrua I increases in sexual activity are due to anticipation of deprivation and rebound following deprivation (Ford & Beach, 1951). Thirty-five married women completed daily questionnaires about their sexual activity for at least two menstrual cycles. Evidence supported the hypothesis that the post-menstrual peak in intercourse is a rebound phenomenon. There was less evidence to support the hypothesis that a pre-menstrual rise represents anticipation of deprivation. In addition, there was a tendency to increase autosexual activity during periods of sexual abstention, which may represent a compensation phenomenon. 相似文献
509.
Speech rate can be reduced by prolonging the duration of phonetic units, by pausing between words, or through a combination of these approaches. Child and adult normally fluent speakers and stutterers were tested in basal and modified speaking rate conditions. Subjects' utterances in both conditions were converted to spectrographic displays so that measures of phonetic and pause durations could be made. Comparisons of these measures across conditions revealed that all four groups of subjects spontaneously extended pause and phonetic durations, the former more than the latter, when instructed to voluntarily reduce speech rate. 相似文献
510.
This study was designed to explore the speech timing skills of normally fluent and stuttering children and adults producing two sentences, ten consecutive times at basal and modified speaking rates. Spectrographic displays of subjects' utterances in both conditions were made in order to obtain consonant, vowel, pause, and utterance duration measures. Results showed that (1) the two groups of children produced speech durational values similar to those of the two adult groups and (3) there were no consistent between- and within-group differences in the basal and modified rate conditions. Findings are discussed in terms of methodological and sampling differences that exist between the present study and past research on stutterers' speech production abilities. 相似文献