Book reviews

Unfolding Islam. P. J. Stewart. xiii + 252 pp. hb., £24.00, London, Ithaca Press, 1994, ISBN 0 86372 194 X; pb. London, Garnet Publishing, 1995, ISBN 1 85964 046 X.

The Basics 2: Islam. Roland Machatschke, 1995. London, SCM Press, 89 pp., pb. £5.95, ISBN 0 334 02603 2.

Voices of Islam. John Bowker 1995. Oxford, Oneworld, 188 pp., pb. £8.95, ISBN 1 85168 095 0.

Abraham, A Symbol of Hope for Jews, Christians and Muslims. Kakl‐Josef Kuschel, 1995. London, SCM, xxix + 286 pp., pb. £14.95, ISBN 0 334 02567 2.

Petrus Alfonsi and his Medieval Readers. J Tolan, 1993. Gainesville, University Press of Florida, 288 pp., pb. £15.00, ISBN 0 8130 1239 2; hb, £31.00, ISBN 0 8130 1238 4.

Islamic Science and Engineering. Donald R. Hill, 1993. Edinburgh, Edinburgh University Press, 250 pp., pb. £16.95, ISBN 0 7486 0455 3.

Islam: the view from the edge. Richard W. Bulliet, 1994. New York, Columbia University Press, 236 pp., pb. $16.95, £11.95, ISBN 0 231 08219 3.

Pioneers of Islamic Revival. Ali Rahnema (Ed.), 1994. London, Zed Books, 279 pp., hb. £36.95, ISBN 1 85649 253 2; pb. £14.95, ISBN 1 85649 254 0.

Freiheit der Religion: Christentum und Islam unter dem Anspruch der Men‐schenrechte [Freedom of Religion; Christianity and Islam tinder the claims of human rights]. Johannes Schwartländer (Ed.), 1993. Mainz, Matthias Grünewald Verlag, 474 pp., DM 48.

Religion, Law and Society: A Christian‐Muslim Discussion. Tarek Mitri (Ed.), 1995. Geneva, WCC Publications and Kampen, Kok Pharos, 154pp, pb. £9.95, ISBN 2 8254 1148 5 (WCC) and 90 390 0514 1.

Muslims in Western Europe. J?rgen Nielsen, 1995 (2nd Edition). Edinburgh, Edinburgh University Press, 190 pp., £14.95, ISBN 0 7486 0617 3.

From Ta'izz to Tyneside: an Arab community in the north‐east of England during the early twentieth century. Richard I. Lawless, 1995. Exeter, University of Exeter Press, 292 pp., pb. n.p., ISBN 0 85989 460 6.

The New Middle East. Shimon Peres with Arye Naor, 1993. Shaftesbury, Element Books, 224 pp., hb. £16.99, ISBN 1 85230 519 3.

The Palestinians: the road to nationhood. David McDowall, 1994. London, Minority Rights Group, 215 pp., hb. £15.95, ISBN 1 873194 70 6.

Mahdism in West Africa: the Ijebu Mahdiyya movement. P.B. Clarke, 1995. London, Luzac Oriental, 224 pp., hb. £30.00, ISBN 1 898942 06 4.

Assaulting with Words: popular discourse and the bridle of Shari^cah. A. A. Ibrahim, 1994. Evanston, IL, Northwestern University Press, 208 pp., hb. 859.95, ISBN 0 8101 1081 4.

The Vanguard of the Islamic Revolution: the Jama't‐i Islami of Pakistan. Seyyed Vali Reza Nasr, 1994. London, I. B. Tauris, 301 pp., hb. n.p., ISBN 1 85043 862 3; pb. £14.95, ISBN 1 85043 864 1.     

Measuring Attitudes in Test-Alien Cultures: When Illiteracy and Unfamiliarity Do Not Matter

This study reports the construction of an attitude scale called a "Shah attitude scale." This scale overcomes the problems of scale construction and attitude measurement in test-alien cultures peculiar to Western scales. The major problems with the use of these scales are the non-correspondence of the samples used in scale construction and attitude measurement, difficulty of their use with the illiterate and rural samples, unfamiliarity of their verbal character and the response modality. Our scale is simple to construct and can be easily used with every section of society. Its conceptualization and development is based upon the agreed upon bipolar definition of attitude and the ideas derived from well-known attitude scales. The scale is based upon trait adjectives and can be used easily in cross-cultural attitudinal studies.     

Vulnerability of facial attractiveness perception to early and multi-year visual deprivation

Judgments of facial attractiveness invariably accompany our perception of faces. Even neonates appear to be capable of making such judgments in a manner consistent with adults. This suggests that the processes supporting facial attractiveness require little, if any, visual experience to manifest. Here we investigate the resilience of these processes to several years of early-onset visual deprivation. Specifically, we study whether congenitally blind children treated several years after birth possess the ability to rate facial attractiveness in a manner congruent to normally sighted individuals. The data reveal significant individual variability in the way each newly sighted child perceives attractiveness. This is in marked contrast to data from normally sighted controls who exhibit strong across-subject agreement in facial attractiveness ratings. This variability may be attributable, in part, to atypical facial encoding strategies used by the newly sighted children. Overall, our results suggest that the development of facial attractiveness perception is likely to be vulnerable to early visual deprivation, pointing to the existence of a possible sensitive period early in the developmental trajectory.     

Exercise Training for Persons with Alzheimer's Disease and Caregivers: A Review of Dyadic Exercise Interventions

Alzheimer's disease (AD) is the most common form of dementia and the prevalence will increase dramatically in the next decades. Although exercise has shown benefits for people with dementia due to AD as well as their caregivers, the impact of a dyadic exercise intervention including both groups as study participants remains to be determined. The authors review the current clinical evidence for dyadic exercise interventions, which are exercise regimens applied to both the person with dementia and the caregiver. A total of 4 controlled trials were reviewed. This review shows that dyadic exercise interventions are feasible and may produce a positive effect on functional independence and caregiver burden. However, there was insufficient evidence to support a benefit of dyadic exercise intervention on cognitive performance and on behavioral and neuropsychiatric symptoms in participants with dementia due to AD. A dyadic exercise intervention improves functional independence and caregiver burden. However, there is a need for well-designed randomized controlled clinical trials to confirm these benefits and to investigate several important points such as the effects of a dyadic exercise intervention on cognitive and noncognitive outcomes of AD, the optimal intensity of exercise training, and the cost effectiveness of such a program.     

The relationship between dynamic strain aging and serrated flow behaviour in magnesium alloy

The relationship between dynamic strain ageing (DSA) and serrated flow has been investigated via alternately switching strain rates at various temperatures in a Mg–3Nd–1Zn alloy. The results reveal that serrated flow is enhanced with decreasing strain rate and increasing temperature and tends to vanish, while the DSA continually intensifies as revealed by a higher flow stress even after the serration flow disappears. A mechanism is proposed, which could explain some abnormal deformation behaviour, such as a negative strain rate sensitivity and thermal hardening.     

Aging, Training, and the Brain: A Review and Future Directions

As the population ages, the need for effective methods to maintain or even improve older adults’ cognitive performance becomes increasingly pressing. Here we provide a brief review of the major intervention approaches that have been the focus of past research with healthy older adults (strategy training, multi-modal interventions, cardiovascular exercise, and process-based training), and new approaches that incorporate neuroimaging. As outcome measures, neuroimaging data on intervention-related changes in volume, structural integrity; and functional activation can provide important insights into the nature and duration of an intervention’s effects. Perhaps even more intriguingly, several recent studies have used neuroimaging data as a guide to identify core cognitive processes that can be trained in one task with effective transfer to other tasks that share the same underlying processes. Although many open questions remain, this research has greatly increased our understanding of how to promote successful aging of cognition and the brain.     

Trust and trustworthiness in a sequential bargaining game

We use a two‐person extensive form bargaining game to explore individuals' trusting and reciprocal behavior and how those relate to their scores on a trust survey. In keeping with prior research, we find that the ‘self‐interested’ outcome is rejected by a majority of individuals. People who score high on the trust survey are both trusting and are also trustworthy, in that they reciprocate others' trust. But people with low‐trust scores often exhibit trust but are not trustworthy. These ‘inconsistent trusters’ seem to be interested in exploiting the trust and trustworthiness of others in increasing their own payoff. Copyright © 2003 John Wiley & Sons, Ltd.     

Training and transfer effects in task switching

Performance on task switching, a paradigm commonly used to measure executive function, has been shown to improve with practice. However, no study has tested whether these benefits are specific to the tasks learned or are transferable to new situations. We report evidence of transferable improvement in a cued, randomly switching paradigm as measured by mixing cost, but we report no consistent improvement for switch cost. Improvement in mixing costs arises from a relative reduction in time to perform both switch and nonswitch trials that immediately follow switch trials, implicating the ability to recover from unexpected switches as the source of improvement. These results add to a growing number of studies demonstrating generalizable improvement with training on executive processing.