Stutterers' voice initiation times during conditions of novel stimulation

The present experiment examined stutterers' voice initiation times (VITs) during conditions of novel stimulation. The experimenters were interested in determining how VITs varied as a function of pacing and masking. Stutterers were examined in control, pacing, and masking conditions. The results indicated that: (1) stutterers significantly improved their VITs in the pacing condition as compared with the control condition (p = 0.005), (2) stutterers had significantly faster VITs in the pacing condition as compared with the masking condition (p = 0.005), and (3) stutterers improved VITs in the masking condition as compared with the control condition (p = 0.075). These results are discussed in terms of the facilatory nature of novel stimulation in modifying speech-system functioning.     

Reliability of the Attitudes Toward Women Scale (AWS) and the Personal Attributes Questionnaire (PAQ)

The stability and internal consistency of Spence and Helmreich's Attitudes Toward Women Scale (AWS) and Personal Attributes Questionnaire (PAQ) are reported. An entire first-year class of 1,007 male and 78 female cadets at the U.S. Military Academy were given a battery of psychological tests before and after cadet basic training, a 2 1/2-month period. The AWS and PAQ proved to be highly reliable, comparable to other frequently used psychological tests. This psychometric information encourages researchers to make further use of these gender-related instruments.This research was conducted under research grants from the Army Research Institute (Alan G. Vitters and Jerome Adams, Principal Investigators). The views expressed herein are opinions of the authors and do not necessarily reflect the policy of the U.S. Army, the U.S. Military Academy, or the Army Research Institute. The authors appreciate the editorial comments of Dr. Brenda Major.     

The labours of Hercules: some good reasons why social workers should not try to be different, and practice family therapy

Family therapy, despite being an approach to problems in a social context, has, for the most part, been developed and refined in medical settings (Adams, 1979). Family therapy propounds a methodology based on social rather than medical techniques of intervention. It is logical to suggest that workers based in socially-orientated agencies, rather than medical settings, could be predicted to be better placed to utilize and develop this particular approach to human problems. How can it be explained that the main bulk of the innovations are still coming from practitioners who have trained primarily in medical approaches and settings? This article looks at some of the reasons why family therapy practice and development is not flourishing in Social Services Departments as it is in, for example, hospitals and clinics. The authors do not offer any positive conclusions at this stage, but will show, in a later publication, what has been achieved in some Social Services Departments, and how practice has been established despite the organizational and operational constraints implicit in the introduction of a family, or systems orientated method, to an agency traditionally and statutorily focused upon the individual.     

The consequences of failing to imitate

Infants were shown three modeled acts presented in sequence. Imitation of one, two, or three of the modeled acts or failure to imitate was then observed. Distress was assessed prior to and following modeling. Infants who failed to imitate at least one act displayed a high level of distress. As a control, the same infants on another day observed the random manipulation of the stimuli. Distress failed to occur when the infants failed to imitate the scattering procedure. These results are discussed in terms of the child's development of internal standards. That is, during the latter part of the second year of life, infants show considerable distress when they fail to imitate coherent modeled acts. Since distress did not occur when the model simply scattered the stimuli, we assumed that interruption of play was not an incentive for distress. Deferred imitation was noted for older but not the younger cohorts.     

Do cognitive factors in motor performance become nonfunctional with practice?

Cognitive factors in motor behavior were defined as verbal and imagery mediators for a discrete, sequential motor task. The question was asked whether these mediators become nonfunctional with extended practice. Non-motor interference training was given in inappropriate verbal and imagery mediation. If cognitive factors in the motor task involve verbal an/or imagery dimensions, and they dominate early in learning, then the non motor interference training should produce relatively large negative transfer effects in the motor performance early in learning and little or no such effects late in learning. The results did not conform to expectation; small negative transfer effects were found both early and late in learning. The discussion considered several possible reason for the outcome: the motor task was dominated by visual and proprioception factors rather than cognitive ones, the method of delivering knowledge of results may have minimized cognitive factors, or the hypothesis is wrong.     

Locus of control and attribution of responsibility for academic performance

This study tested Phares, Wilson, and Klyver's (1971) hypothesis that locus of control differences are unimportant in a situation which provides very explicit cues arousing specific expectancies regarding the locus of blame for poor performance. Two hundred and seventeen undergraduate students (134 men and 83 women) completed Rotter's I-E Scale as part of classwork in midsemester. During the last week of the semester they were routinely administered a questionnaire containing items on course evaluation, instructor evaluation, and expected grade. Expected grade was significantly correlated with ratings on several course evaluation and instructor evaluation items for internals and externals in the male, female, and total samples. However, these correlations were not significantly different for internals and externals in each sample. These results provided strong empirical support for the tested hypothesis.     

Vocal changes in stutterers and nonstutterers during high- and low-pitched speech

This study was conducted to provide an indirect test of Wingate's “modified vocalization” hypothesis. In this formulation, the improved fluency that stutterers experience in various novel conditions is attributed to changes in the key correlates of stress, namely, fundamental frequency, vocal SPL, and rate.Normal speakers and stutterers read aloud in an habitual condition following instructions to read at higher- and lower-than-normal pitches. Objective measures were taken of subjects' fundamental frequency, fundamental frequency deviation, vocal SPL, and fluent reading rate. Disfluences were also counted. Findings showed that both stutterers and normals altered several features of voicing from the habitual to the two experimental conditions. Significant condition main effects emerged for fundamental frequency deviation, vocal SPL, fluent reading rate, and disfluency. The only meaningful between-group difference noted showed that the stutterers were more disfluent than the normals across all conditions. Results were interpreted as supporting Wingate's “modified vocalization” position and were discussed relative to how the vocal changes observed might act to promote fluency.     

Reliability of headache diagnosis

The literature on diagnosis of head pain associated with psychological factors indicates that these diagnoses rely almost exclusively on self-report criteria. The reliability of self-report criteria for diagnosis of headache has not been previously reported. The present study investigated the reliability of headache diagnosis based on the criteria suggested by the Ad Hoc Committee on Classification of Headache. The results indicated modest rater agreement. It was concluded that the headache literature may be confounded by unreliable diagnostic procedures. Improved methods of classifying headache types using self-report, behavioral, and physiological measures during pain-free and headache states are required before adequate reliability of headache classification can be achieved. It is suggested that reliable and valid measurement and classification would eliminate much of the confusion currently existing in the headache literature.     

Effects of pattern, spatial frequency, number, and rate of stimulus presentation on the accuracy of detection.

Brief trains of pulsed stimuli were used to assess whether magnocellular or parvocellular visual pathways could be differentiated perceptually. Trains of either one to four sine-wave, square-wave, or checkerboard gratings were presented at three temporal and two spatial frequencies to six observers. The task of the observer was to report the perceived number of stimuli (gratings) in a train. The difference between actual number and perceived number of gratings was recorded as an error score. It was found that neither the pattern nor the spatial frequency of the gratings significantly affected perceptual accuracy. On the other hand, the number of gratings in a train and the interstimulus interval between gratings produced significant differences. Perceptual accuracy was greater when lower numbers of gratings in a train were presented with longer interstimulus intervals. The observers typically reported fewer stimuli than were presented. The source of the discrepancy is discussed in terms of a light adaptive process initiated in the retina.