Perceived area and the luminosity threshold

Observers made forced-choice opaque/luminous responses to targets of varying luminance and varying size presented (1) on the wall of a laboratory, (2) as a disk within an annulus, and (3) embedded within a Mondrian array presented within a vision tunnel. Lightness matches were also made for nearby opaque surfaces. The results show that the threshold luminance value at which a target begins to appear self-luminous increases with its size, defined as perceived size, not retinal size. More generally, the larger the target, the more an increase in its luminance induces grayness/blackness into the surround and the less it induces luminosity into the target, and vice versa. Corresponding to this luminosity/grayness tradeoff, there appears to be an invariant: Across a wide variety of conditions, a target begins to appear luminous when its luminance is about 1.7 times that of a surface that would appear white in the same illumination. These results show that the luminosity threshold behaves like a surface lightness value—the maximum lightness value, in fact—and is subject to the same laws of anchoring (such as the area rule proposed by Li & Gilchrist, 1999) as surface lightness.     

Unmasking the inhibition of return phenomenon

Conventional wisdom holds that a nonpredictive peripheral cue produces a biphasic response time (RT) pattern: early facilitation at the cued location, followed by an RT delay at that location. The latter effect is called inhibition of return (IOR). In two experiments, we report that IOR occurs at a cued location far earlier than was previously thought, and that it is distinct from attentional orienting. In Experiment 1, IOR was observed early (i.e., within 50 msec) at the cued location, when the cue predicted that a detection target would occur at another location. In Experiment 2, this early IOR effect was demonstrated to occur for target detection, but not for target identification. We conclude that previous failures to observe early IOR at a cued location may have been due to attention being directed to the cued location and thus “masking” IOR.     

Face-to-face and at a distance: The mediation of guidance and counselling through the new technologies

The hitherto widely-held assumption that the counselling interaction should be conducted face-to-face, while other activities within the overall guidance process could be supported by computer, is re-examined. Recent computer-mediated information and communications technologies are reviewed, and their implications for guidance and counselling as a whole are explored. While fears are still current that human relations will be mechanised through the use of the information and communications technologies, it is contended that human relations will be changed but not necessarily diminished. Comparisons are drawn with the ways in which open and distance learning have brought a re-examination of what is understood to be a 'real' teaching interaction. It is suggested that practitioners in the fields of guidance and counselling must similarly be prepared to manage radical change.     

The Association of Group Self-Identification and Adolescent Drug Use in Three Samples Varying in Risk1

This study provides a cross-sectional analysis of the relations between group self-identification and adolescent drug use in 3 samples of youth: comprehensive high-school, continuation high-school, and runaway/street youth. Youth identified with discrete groups in all 3 samples, and similar general groups were formed. In most comparisons, a high-risk group showed greater levels of drug use than did other groups. This is the first study to demonstrate that group self-identification (a) is a generalizable construct across different types of adolescent samples, (b) is related to use of drugs other than tobacco, and (c) remains a significant correlate of drug use controlling for its relations with demographic variables and several other psychosocial variables.     

Longitudinal trajectories of bicultural identity integration in recently immigrated Hispanic adolescents: Links with mental health and family functioning

This study examined, in a sample of recently immigrated Hispanic adolescents in Miami and Los Angeles, the extent to which bicultural identity integration (BII; involving the ability to synthesise one's heritage and receiving cultural streams and to identify as a member of both cultures) is best understood as a developmental construct that changes over time or as an individual‐difference construct that is largely stable over time. We were also interested in the extent to which these trajectories predicted mental health and family functioning. Recent‐immigrant 9th graders (N = 302) were assessed 6 times from 9th to 12th grade. Latent class growth analyses using the first 5 timepoints identified 2 trajectory classes—one with lower BII scores over time and another with higher BII scores over time. Higher heritage and US identity at baseline predicted membership in the higher BII class. At the 6th study timepoint, lower BII adolescents reported significantly poorer self‐esteem, optimism, prosocial behaviour and family relationships compared with their higher BII counterparts. These findings are discussed in terms of further research on the over‐time trajectory of biculturalism, and on the need to develop interventions to promote BII as a way of facilitating well‐being and positive family functioning.     

Inequalities in Health and Intergenerational Equity

In the popular folklore three-score-years-and-ten is treated as a fair innings for people, and thereby serves as an informal reference point for judgements about distributive justice within a community. But length of life alone is an insufficient basis for such judgements - a person's health-related quality-of-life also needs to be taken into account. If one of the objectives of public policy is to reduce inequalities in lifetime health, it will be demonstrated that this is very likely to require systematic discrimination against the older members of a community. The notion of community solidatity will also be tested, because a decision will need to be made as to whether the same fair innings applies to all members of the community, or whether some are entitled to more than others. The strength of the fair innings principle is that it brings these issues to the fore in a systematic way which should ais their resolition in a practical context.     

An Examination of the Combined Effects of Realistic Job Previews, Job Attractiveness and Recruiter Affect on Job Acceptance Decisions

Cette recherche s'est donnée pour objectif 17apos;étude des effets combinés des profils de poste réalistes (R.J.P.), de l'intérêt du travail et de l'impact du responsable de recrutement sur la décision des candidats d'accepter ou non le poste. Soixante étudiants de 1* cycle ont joué le rôle de candidat à un emploi; its ont été distribués au hasard dans l'une de trois conditions d'information sur le travail: (1) Un profil de poste réaliste décrit oralement pendant l'entretien. (2) Un profil de poste réaliste remis avant l'entretien sous forme imprimée. (3) Une information générale sur le travail donnée oralement lors de l'entretien. Les résultats confirment les hypothèses: les effets positifs indirects des profils de poste réalistes (l'intérêt du poste et l'impact du responsable du recrutement) compensent l'effet négatif direct des R.J.P. sur la décision d'acceptation du poste. Ce phénomème était particulièrement net dans la présentation orale du R.J.P. par comparaison avec la présentation écrite. Un modèle rendant compte des conséquences des R.J.P. sur les décisions d'acceptation d'un poste est décrit et testé avec un modele concurrent.     

Book reviews

Lea, S. E. G., Tarpy, R. M., & Webley, P. (1987). The individual in the economy. Cambridge: Cambridge University Press. Pp. 627 + xxiv. ISBN 0-521-26872-9. £39.50 (Hardback). ISBN 0-521-317014. £13.95 (Paperback).

Davey, G. & Cullen, C. (Eds.) (1988). Human operant conditioning and behaviour modifcution. Chichester: John Wiley & Sons. Pp. x + 270. ISBN 0-471-91637-4. £29.50.

Commons, M. L., Mazur, J. E., Nevin, J. A. & Rachlin, H. (Eds.). (1987), Quantitative analyses of behavior. Vol. 5: The efect of delay and of intervening events on reinforcement value. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc. Pp. 344. ISBN 0-89859-800-1. £31.00.

Pearce, J. M. (1987). An introduction to animal cognition. Hove and London: Lawrence Erlbaum Associates Ltd. Pp. 328. ISBN 0-86377-0568 (hardback) 219.95; ISBN 0-86377457-6 (paperback) £9.95.

Archer, J. (1988). The behavioural biology of aggression. Cambridge: Cambridge University Press. Pp. x + 257. ISBN 0-521-34790-4. £9.95 (paperback).

Greenberg, G. and Tobach, E. (Eds.) (1987). Cognition, language, and consciousness: Integrative tevels. The T. C. Schneirla Conference Series. Volume 2. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc. Pp. ix + 301. ISBN 0-89859-7224. £27.50.

Mook, D.G. (1987). Motivation: The organisation of action. New York: Norton. Pp. xxii + 586. ISBN 0-393-95474-9. £12.95 (hardback).

Frank, H. (Ed.) (1987). Man and wolf: Advances, issues and problems in captive wow research. Dordrecht: Dr. W. Junk. Pp. xviii + 439. ISBN 90-6193-614-4. £103.25 (hardback).     

Book reviews

Weiskrantz, L. (1986). Blindsight: A case study and implications. Oxford University Press. Pp. 187. ISBN 0-19-852129-4. £19.50.

Humphreys, G. W. & Riddoch, M. J. (1987). to see but not to see: A case study of visual agnosia. Hove and London: Lawrence Erlbaum Associates Ltd. Pp. 124. ISBN 0-83677-064-9. £12.95.

Downing, J. A. (1988). Advances in psychology: Cognitive psychology and reading in the USSR. Amsterdam: North Holland; Elsevier Science Publishers. Pp. 471. ISBN 0-444-70374-8. $108.00.

John Beech & Ann Colley (Eds.) (1987). Cognitive approaches to reading. Chichester: John Wiley. Pp. xii + 315.

James Wertsch (Ed.) (1985). Culture, communication and cognition: Vygotskian perspectives. Cambridge: Cambridge University Press. Pp. 379. ISBN 0-521-25214-8. £27.50 (Hardback).

Fodor, J. A. (1987). Psychosemantics: The problem of meaning in the philosophy of mind. Cambridge, MA: M.I.T. Press. Pp. xiii, 1-171. ISBN 0-262-06106-6.

Richardson, K. (1988). Understanding Psychology. Milton Keynes: The Open University Press. Pp. 114. ISBN 0-335-09842-8. Paperback £7.95.

Stanovich, Keith E. (Ed.) (1988). Children's reading and the development of phonological awareness. Detroit: Wayne State University Press. Pp. 177. ISBN 0-8143-1909-2. $20.00.

Allport, A., MacKay, D.G., Prinz, W., & Scheerer, E. (Eds.), (1987). Language perception and production: Relationships between listening, speaking, reading, and writing. London: Academic Press. Pp. xiii + 497. ISBN 0-12-052750-2. £32.00

Light, L. L. & Burke, D. M. (eds.) (1988). Language, Memory and Aging. Cambridge: Cambridge University Press. Pp. 280. ISBN-0-521-32942-6. £27.50

Friedman, S.L., Scholnick, E.F., and Cocking, R. R. (1987). Bleuprints for thinking: The role of planing in cognitive development. Cambridge: Cambridge University Press. Pp. xv + 559. ISBN 0-521-25605-4. £40.00.