Use of vocalic cues to consonant voicing and native language background: The influence of experimental design

For native speakers of English and several other languages, preceding vocalic duration andFi offset frequency are two of the cues that convey the stop consonant voicing distinction in wordfinal position. For speakers learning English as a second language, there are indications that use of vocalic duration, but notFl offset frequency, may be hindered by a lack of experience with phonemic (i.e., lexical) vowel length (the “phonemic vowel length account”: Crowther & Mann, 1992). In this study, native speakers of Arabic, a language that includes a phonemic vowel length distinction, were tested for their use of vocalic duration andF1 offset in production and perception of the English consonant-vowel-consonant forms pod and pot. The phonemic vowel length hypothesis predicts that Arabic speakers should use vocalic duration extensively in production and perception. On the contrary, experiment l repealed that, consistent with Flege and Port’s (1981) findings, they produced only slightly (but significantly) longer vocalic segments in their pod tokens. It further indicated that their productions showed a significant variation inFl offset as a function of final stop voicing. Perceptual sensitivity to vocalic duration andFl offset as voicing cues was tested in two experiments. In experiment 2, we employed a factorial combination of these two cues and a finely spaced vocalic duration continuum. Arabic speakers did not appear to be very sensitive to vocalic duration, but they were abort as sensitive as native English speakers toF1 offset frequency. In Experiment 3, we employed a one-dimensional continuum of more widely spaced stimuli that varied only vocalic duration. Arabic speakers showed native-English-like sensitivity to vocalic duration- Anexplanation based on tie perceptual anchor theory of context coding (Braida et al., 1984; Macmillan, 1987; Macmillan, Braida, & Goldberg, 1987) and phoneme perception theory (Schouten & Van Hessen, 2992) is offered to reconcile the apparently contradictory perceptual findings. The explanation does not attribute native-English-like voicing perception to the Ambit subjects. The findings in this study call fox a modification of the phonemic vowel length hypothesis.     

Introduction: A Theoretical Basis for Psychiatry

Theoretical Medicine and Bioethics -     

Some philosophical directions towards a simple theory of the self

In the act of self-observation, an individual becomes simultaneously observer and observed, subject and object. While some philosophical psychologists have dismissed thisreflexivity, the present author proposes that it isthe essential feature of the self, making it the basis of a new, conceptually simple, structural and dynamic theory of the self. Drawing from psychopathology, poetry and literature, the author portrays normal and disordered psychological states as disturbances in reflexivity. Qualitative and quantitative variations in this core function are proposed to define discreet spectra of psychological situations. The author briefly examines the theories and practices of psychoanalytic and existential psychology, and proposes clinical applications of the new views here depicted. He attempts to show that inherent limits to our simultaneous knowledge of both aspects of the reflexive duality limit the precision and validity of all psychological theorization.     

Early Election Returns and the Voting Behavior of Adolescent Voters1

High school students participated in a field experiment that tested the effects of exposure to early election returns in a nonpartisan referendum. On a pretest of attitudes, students stated their preferences on the issue of the school's grading policy. One week later, just before voting, subjects in the experimental condition received information announcing the probable outcome of the election. There was a significant relationship between class achievement level and (a) likelihood of changing vote, and (b) the direction of change. Students in the brighter classes changed their votes less frequently, but when they changed their preferences they showed a greater bandwagon effect. Students in the classes of lower academic achievement changed their votes more frequently, but when they changed their preferences they showed a greater underdog effect. Differences between the more typical political election in which bandwagon and underdog effects are seldom reported and the experimental election were discussed.     

Errors in short-term memory for good and poor readers

This study examined the role of phonetic factors in the performance of good and poor beginning readers on a verbal short-term memory task. Good and poor readers in the second and third grades repeated four-item lists of consonant-vowel syllables in which each consonant shared zero, one, or two features with other consonants in the string. As in previous studies, the poor readers performed less accurately than the good readers. However, the nature of their errors was the same: Both groups tended to transpose initial consonants as a function of their phonetic similarity and adjacency. These findings suggest that poor readers are able to employ a phonetic coding strategy in short-term memory, as do good readers, but less skillfully.     

Relative Deprivation,Dissatisfaction, and Militancy: A Field Study In A Protest Crowd1

The links between relative deprivation (RD), dissatisfaction with financial situation, and propensity for militancy were examined in a field study of a farmers' rally in Adelaide, South Australia. The rally was held to protest the blockade of sheep exports by the meat workers' union. Consistent with Gurr's (1970) theory, a majority of protesters were relatively deprived. However, there was no support for Morrison's (1971) hypothesis that participants in a conservstive protest demonstration are in a state of “decreinental” RD. No support mas found for Gurr's postulate that RD is the basic condition for participants in collective violence. RD war significantly associated with feelings of dissatisfaction but not with predispositions toward militancy. Dissatisfaction alone was a significant predictor of militant predisposition. Factors that may act to weaken the link between RD and militancy in actual episodes of collective behavior were discussed.     

Self-efficacy in mastery learning to apply a therapeutic psychomotor skill

This study assessed changes in Self-efficacy scores produced by each of the four steps of instruction used to teach students a therapeutic psychomotor skill used by osteopathic physicians. Volunteering subjects were an entire class of 83 first-year osteopathic medical students (40 men, 43 women, M age = 25.1 yr.). Self-reported Self-efficacy to perform the skill was sampled: (1) after an instructor's demonstration of the skill during a laboratory session, (2) after paired students practiced during the laboratory session, (3) after independent self-paced practice outside class using an instructional handout and videotape, and (4) after receiving individualized feedback on skill performance from an instructor acting as the "patient." The first two steps, representing typical skill instruction, produced mean Self-efficacy scores of 18% and 30%, respectively. On the last two steps, added to implement mastery learning, mean Self-efficacy scores increased to 75% and 85%, respectively. The instructors confirmed that all students mastered performance of the skill. Mastery learning was effective in developing both the therapeutic skill and high Self-efficacy to utilize the skill.