Book reviews

Spoehr, K. T., and Lehmkuhle, S. W. Visual Information Processing. San Francisco: Freeman. 1982. Pp. 298. ISBN 0-7167-1373-X. Hardback £16.90; paperback £9.80.

Weale, R. A. Focus on Vision. London: Hodder & Stoughton. 1982. Pp. 194. ISBN 0-340-24839-4. £5.75.

Warren, R. M. Auditory Perception: A New Synthesis. New York: Pergamon Press. 1982. Pp. 239. ISBN 0-08-025957-X. £12.50.

Bryden, M. P. Loterality: Functional Asymmetry in the Intact Brain. London: Academic Press. 1982. Pp. 319. ISBN 0-12-138180-3. £19.60.

Simon, T. W. and Scholes, R. J. (Eds.) Language, Mind, and Brain. Hillsdale, N. J.: Lawrence Erlbaum Associates. 1982. Pp. xvi + 263. ISBN 0-89859-153-8. £19.95.

Wilding, J. M. Perception: From Sense to Object. London: Hutchinson. 1982. Pp. 314. ISBN 0-09-150720-1. £12.95.

Rosenzweig, M.R. and Porter, L. W.(Eds.). Annual Review of Psychology, Vol. 34. Palo Alto, Calif.: Annual Reviews Inc. 1983. Pp. 617. ISBN 0-8243-0234-6. $30.00.

Schank, R. C. Dynamic Memory. Cambridge: Cambridge University Press. 1983. Pp. 233. ISBN 0-521-24856-2. Hardback £18.50; paperback £6.95.

Hinton, G. E. and Anderson, J. A. (Eds.). Parallel Models of Associative Memory. Hillsdale, N. J.: Lawrence Erlbaum Associates. 1981. Pp. 295. ISBN 0-89859-105-0. £17.50.     

The contribution of the thumb to reaching movements

Transport of the hand towards an object and the formation of grasp are logically separable components of reaching. It has been suggested that, although the two components must be temporally co-ordinated, their spatial parameters are under the control of independent visuo-motor channels. A case study of reaching by a proficient user of a manually-operated artificial hand is presented. A pattern of natural hand usage was observed in which the index finger rather than the thumb was responsible for reduction of grasp aperture as the hand approached an object. The same pattern of usage was also observed in the artificial hand even though the mechanics of that hand make it no easier to move the finger than the thumb. This suggests that the relative stability of the thumb in the natural hand is determined, not simply by anatomy, but by a role in guiding the transport component of reaching. At least part of the spatial aspect of grasp formation is closely related to the transport component of reaching and this is evidence against theories postulating two independent visuo-motor channels controlling the spatial parameters of grasp and transport.     

Personal Selling & Sales Management Abstracts

For most people retirement means fishing, golf, travel and other leisure activities, but not for John Wyman. After retiring from a highly successful management career with AT&;T, Wyman has begun his second career as a business educator.     

The 30th Sir Frederick Bartlett lecture: Fact, artefact, and myth about blindsight

Blindsight is the ability, still controversial if a vote is taken, of subjects with clinically blind field defects to detect, localize, and discriminate visual stimuli of which the subjects say they are completely unaware—the original definition—or of which they might be aware but not in the sense of experiencing a visual percept. These two conditions are known as blindsight Types I and II. This Bartlett lecture narrates the discovery of blindsight and its mounting opposition, and it evaluates the continuing and often perplexing debate about its standing as a visual cognitive phenomenon.     

Defending or relinquishing belief in occurrence for remembered events that are challenged: A social-cognitive model

We describe a social-cognitive model explaining processing of cognitive dissonance resulting from being told by someone that a vividly remembered event did not actually occur. The model proposes that receiving challenges to one's recollection of events results in both intrapersonal and interpersonal cognitive dissonance. Rememberers process intrapersonal dissonance by weighing features of memory representations against the qualities of the feedback, and they process interpersonal elements by weighing the potential costs of agreeing or disagreeing with the challenger within the social dynamics of the relationship. To resolve the dissonance, people will either maintain or reduce belief in occurrence for the event, and will agree or disagree with the challenger. We explore factors that can influence dissonance and how they impact the rememberers' beliefs in occurrence of the event and their interaction with challengers in terms of defending or relinquishing their memory, and we discuss preliminary data confirming some of these factors.     

Toward a Sociocultural Perspective on Means of Self-Destruction*

ABSTRACT: The relationship between an individual's intent to die and choice of method is examined. A sociocultural perspective is developed in an attempt to: explain the principle differences in choice of method by sex; to explain regional variations over time, by sex; and to differentiate between regional and/or cultural areas in their use of firearms as a means of self-destruction. The concept of availability is examined, and it is shown that it consists of, at least, two dimensions: the physical presence of a method, and the sociocultural acceptability of that method that results in the individual's selection of a particular method of self-destruction from a range of socially and culturally acceptable means of suicide. A concept of suicidal threshold is advanced as suggestive of a suicidal level that an individual must reach before a suicidal process develops and results in the person's self-inflicted death.     

Dimensions of Religiousness and Cancer Screening Behaviors Among Church-Going Latinas

Churches are a promising setting through which to reach Latinas with cancer control efforts. A better understanding of the dimensions of religiousness that impact health behaviors could inform efforts to tailor cancer control programs for this setting. The purpose of this study was to explore relationships between dimensions of religiousness with adherence to cancer screening recommendations among church-going Latinas. Female Spanish-speaking members, aged 18 and older from a Baptist church in Boston, Massachusetts (N = 78), were interviewed about cancer screening behaviors and dimensions of religiousness. We examined adherence to individual cancer screening tests (mammography, Pap test, and colonoscopy), as well as adherence to all screening tests for which participants were age-eligible. Dimensions of religiousness assessed included church participation, religious support, active and passive spiritual health locus of control, and positive and negative religious coping. Results showed that roughly half (46 %) of the sample had not received all of the cancer screening tests for which they were age-eligible. In multivariate analyses, positive religious coping was significantly associated with adherence to all age-appropriate screening (OR = 5.30, p < .01). Additional research is warranted to replicate these results in larger, more representative samples and to examine the extent to which enhancement of religious coping could increase the impact of cancer control interventions for Latinas.