Degree of ear asymmetries for perception of dichotic chords and for illusory chord localization in musicians of different levels of competence

Left-ear superiority for perception of dichotically presented musical chords was seen in musicians at all levels of competence. However, a hypothesis that dominance would be greater in the more professional musicians was not confirmed. Whereas many of the professionals did have the largest left-ear preferences, about half had strong right-ear superiorities instead. On the average, therefore, there was no ear dominance for the two most professional groups, although the other groups had the expected left-ear dominance. Furthermore, ear differences for the professional groups were distributed only in the categories of weak to strong left- and weak to strong right-ear preferences, whereas ear differences for the other groups included also the central categories of no or little ear preference. The better musician groups were also more strongly affected by an auditory illusion in which right-ear dominance occurred when subjects reported the ear receiving the high chord, whereas left-ear dominance was seen when they reported the ear receiving the low chord (for the same dichotic pair). That is, ear dominance was dependent on instructions, switching in the same subject from left to right ear when the task changed from reporting the location of the low to reporting the location of the high chord, respectively. However, ear dominance and switching were only partially present in nonmusicians and were weak in amateurs. It may be that ear dominance for chord recognition is influenced by specialized cognitive development in musicians, on the one hand, and by noncognitive neurophysiological factors on the other.     

New perspectives in temperament/personality research: The “Behavioral” model of the Warsaw group

This paper reviews the theory and research of the Warsaw school of differential psychophysiology, which has modified and extended the typologic model constructed by Teplov and Nebylitsyn. While Soviet theory still favors a relatively inflexible structure of nervous system properties as the biologic basis of individual differences in personality, Strelau and colleagues, in line with the action/activity model of Vygotsky and Tomaszewski, begin with the premise that for every individual there is a specific, genetically determined optimal level of arousal, a necessary background for fullest emotional and intellectual development. The person strives to create this optimal climate through an active process of stimulation control, achieved primarily through enhancement or dampening of reactivity—which describes innate responsivity in the reacting systems to both sensory and emotional stimuli—through various hormonal ‘tuning’ mechanisms and through “appropriate” activity, reflected in different cognitive styles and preference for certain work conditions. Such activities aim to ensure comfortable physical and psychologic environments, in which the individual can avoid conflict and stress. The system regulating and integrating such control mechanisms is the core of personality. Investigations of the Warsaw group on relationships between reactivity and different forms of stimulation seeking/control—risk-taking, work style preferences, cognitive style, defense mechanisms, for example—and between reactivity and tolerance of stress and conflict and their speculations about the neurophysiologic and endocrinologic mechanisms of stimulation control are described, as are a number of questionnaires developed by this group to measure reactivity, the temporal parameters of response, and stimulation-seeking in a variety of occupational and social contexts.     

Right hemisphere comprehension of verbs in patients with complete forebrain commissurotomy: Use of the dichotic method and manual performance

The paradigm of dichotic listening was used to investigate verbal comprehension in the right, so-called “nonverbal,” hemisphere. Verbal commands were presented to the right and left ears in the simultaneous (dichotic) paradigm. There were striking instances, especially when the left hemisphere was occupied with some extraneous task, in which the right hemisphere understood the verbal command and executed the appropriate motor responses. In those instances the left hemisphere gave no overt response. Although the left hemisphere was usually dominant, it can be nevertheless concluded that not only can the right hemisphere understand verbal commands but can also express itself manually by executing actions more complex than object retrieval or pointing. As has been known for some time, the blockage of the ipsilateral pathway seems so complete during dichotic listening in the commissurotomy patient that there is no report of the words in the left ear—only of those presented to the right. At the same time there is normal report when words are presented to the left ear alone. It was found in the present study, however, that this model is too simple and only applies to the verbal response paradigm of dichotic listening. Under circumstances of dichotic presentation where the stimulus in the left ear (ipsilateral pathway) is necessary or important to the left hemisphere for completing a task, words from both pathways are reported. One may conclude that there exists a gating mechanism in each hemisphere that controls the monitoring of each auditory pathway and the degree of ipsilateral suppression.     

Shift of visual field preference for Hebrew words in native speakers learning to read

Lateralization for Hebrew words was tested in both the visual and auditory modalities in Israeli children learning to read their native language, Hebrew. A left visual field preference for tachistoscopically presented words was found in the second graders in contrast to a right visual field preference for the same words in the third graders. Children in both grades showed a right ear dominance for similar words presented dichotically. These data suggest right hemisphere involvement in acquiring reading skills of a native language.     

Extending Holland's theory to the later years

Sixty-five men and women, aged 50 to 88 years, completed Holland's Vocational Preference Inventory (VPI) and a work history questionnaire. Each participant was assigned one-letter Holland personality type codes for his or her first full-time job, longest full-time job, last job (if retired) or present job (if employed), and hobbies. In general, VPI scale scores and high point codes were consistent with the occupational codes but less consistent with the hobby code. The usefulness of Holland's vocational theory to the aged population is discussed.     

Conflict,learning, and Piaget: Comments on Zimmerman and Blom's “Toward an empirical test of the role of cognitive conflict in learning”

A brief historical account dealing with the concept of psychic conflict is first presented, followed by an examination of Piaget's equilibrium/equilibration model and the relevance of the concept of conflict to that model. A critical analysis of B. J. Zimmerman and D. E. Blom (Developmental Review, 1983, 3, 18–38) is then presented, after which suggestions are made regarding future directions research efforts pertaining to Piaget's conflict/learning formulation might fruitfully take.     

Characteristics of schizophrenics' and neurotics' relatives

A group of adult first-degree relatives of schizophrenics were compared with a control sample of neurotics' relatives on the EPQ, an earlier version of the Eysenck P scale, and on three specially-constructed scales of ‘psychoticism’ (STA, STB and S), derived from a consideration of the clinical symptomatology of schizophrenia and of the ‘borderline syndromes’. Overall differences, in a predictable direction, were confined to the EPQ P scale where schizophrenics' relatives had significantly higher scores, though further analysis suggested that this was due partly to the raised scores of males and partly to very low P-scores seen in male neurotics' relatives. Scores on the STA, measuring schizophrenic ‘symptoms’, were very low in schizophrenics' relatives, due, it was argued, to extremely defensive responding in that group. Results are also reported for two psychophysiological measures, forearm EMG and skin conductance. Here marked group differences were observed, schizophrenics' relatives having significantly higher mean EMG and significantly lower mean skin conductance. This unusual pattern of response was especially evident in a small subgroup of schizophrenics' relatives whose personality profiles tended to differ in the predictable direction, towards greater ‘psychoticism’. The psychophysiological data were highly consistent with other results from our laboratory demonstrating a ‘dissociation’ between different measures of ‘arousal’ in high-P normal subjects and in psychotic patients and it was concluded that measures based on such a conception of the biological basis of schizophrenia offer considerable promise as high-risk indicators of psychopathology.     

Dimensions of perfectionism and irrational thinking

Several authors have suggested that perfectionism is associated with irrational thinking. The purpose of the present research was to test the hypothesis that various dimensions of perfectionism are related significantly to core irrational beliefs. In Study 1, 102 subjects completed the Multidimensional Perfectionism Scale (MPS) and the Irrational Beliefs Test (IBT). The MPS provides assessments of self-oriented, other-oriented, and socially prescribed perfectionism. Analyses revealed that self-oriented perfectionism was correlated positively with the IBT high self-expectations and perfect solutions subscales. Socially prescribed perfectionism was correlated significantly with a variety of irrational beliefs including high self-expectations, demand for social approval, dependency, blame proneness, and anxious overconcern. Other-oriented perfectionism was correlated with few irrational beliefs. In Study 2, 130 subjects completed the MPS and the Survey of Personal Beliefs, a new measure of core irrational beliefs. Analyses confirmed that all three perfectionism dimensions were associated with core irrational beliefs. It is concluded that the results constitute general support for the hypothesis that cognitive aspects are important in both personal and social components of perfectionism and that perfectionists are characterized by increased levels of irrational beliefs that may contribute to maladjustment. The findings are discussed in terms of the associations among perfectionism, irrational beliefs, and maladjustment.Gordon L. Flett, Ph.D is currently an assistant professor in the Department of Psychology at York University. Paul L. Hewitt, Ph.D is a clinical psychologist at Brockville Psychiatric Hospital. He is also an assistant professor in the Department of Psychiatry at the University of Ottawa. Kirk R. Blankstein, Ph.D, is an associate professor in the Department of Psychology at Erindale College, University of Toronto. Spomenka Koledin is a former student at Erindale College, University of Toronto. Currently, she is a graduate student in the Master of Arts programme at York University.     

Psychometric properties of attitudinal measures of behavioral treatment in geriatric settings

Internal consistency of two forms of the Geriatric Treatment Acceptability Survey (GTAS) and the Attitudes toward Behavior Analysis Scale (ABAS), a global measure of attitudes toward behavior modification, was evaluated. Alpha coefficients regarding treatment acceptability ratings for GTAS Form H were: (a) wandering 0.94; (b) hoarding 0.96; (c) disruptive behavior 0.92; (d) property destruction 0.95; and (e) aggression 0.94. Internal consistency for Form NH was: (a) wandering 0.96; (b) hoarding 0.97; (c) disruptive behavior 0.96; (d) property destruction 0.97; and (e) aggression 0.76. Internal consistency of the ABAS resulted in alpha coefficients of 0.90 (total score); 0.87 (ethics and humaneness); and 0.76 (use). These measures appear useful in assessing older adults, nursing home patients' and geriatric nursing staffs' global and specific attitudes regarding the use of behavioral treatments with older adults. Further research is needed to establish psychometric constructs assessed by the instruments and sensitivity to detecting change in attitudes based on educational or clinical interventions.