Challenging the Leadership: The Party Conference as a Platform for Dissenting Membership Voice in British and Danish Parties of the Left

According to A. O. Hirschman, party members who are dissatisfied with their party's policy have two options: they can either leave the party (exit) or try to change party policy (voice). Research has shown that leadership control over policy is extremely high, leaving membership influence virtually non-existent. On that basis, exit seems the only viable membership reaction to dissatisfaction with party policy. Nevertheless, research has also shown that voice is of great importance to members; hence it is voice that will be the main focus of this article, which examines the circumstances under which party members are likely to opt for voice over exit and what factors are likely to hamper voice. Using a study of the Danish Socialist Peoples Party, the Danish Social Democrats and the British Labour Party, the article shows that despite the odds stacked against them, some party members do make use of the opportunities for voice offered by the party conference, but also that they often face significant obstacles in exercising it.     

The Tax That Failed: The VAT in Niger

The value-added tax (VAT) requires considerable sophistication on the part of both the taxpayers and the tax authorities in order to function effectively; not all countries meet this criteria. After Niger implemented the VAT in 1986, instead of realizing an increase in tax revenue it witnessed a decline, creating a major budget crisis. This article discusses why the VAT was an inappropriate choice for Niger, analyzes the reasons for the decline in tax revenue, and proposes alternative policies consistent with the administrative capacity of the Niger government and the existing socioeconomic environment.     

Polling effects in election campaigns

The effects of polls on public opinion and voting behavior have begun to attract considerable attention. However, aside from experimental studies and research on exit polls, the impact of preelection polls has not received adequate analysis. This paper investigates whether exposure to polls released during the campaign influences voter choices and how the electoral context of referendum versus candidate elections makes a difference in terms of polling effects. These questions were addressed in a cross-election comparison of the 1980 presidential campaign and a 1986 state referendum on the right-to-life issue. Basically, I found significant effects during the referendum, but weak effects in the presidential general election.     

B. Reviews: general

i. SHADOWS ON THE SAND: THE MEMOIRS OP SIR GAWAIN BELL. By (SIR) GAWAIN BELL. London, C.Hurst/New York, St Martins, 1983. pp.xiv, 258, 2 maps and index. El3.50.

ii. THE SUDAN MEMOIRS OF CARL CHRISTIAN GIEGLER PASHA. Edited by RICHARD HILL. Translated from the German by THIRZA KÜPPER. With a foreword by the Pasha's great‐granddaughter, HEIDI GROHA. Oxford, Oxford University Press (for the British Academy), pp. xxxii, 231, 3 maps, 12 plates. £18.00.

iii. EGYPT IN THE REIGN OF MUHAMMAD ALI. By AFAF LUTFI AL‐SAYYID MARSOT. (Cambridge Middle East Library) Cambridge, Cambridge University Press, 1984. pp.x, 300. £25.00.

iv. URBAN NOTABLES AND ARAB NATIONALISM: THE POLITICS OF DAMASCUS. By PHILIP S. KHOURY. (Cambridge Middle East Library) Cambridge, Cambridge University Press, 1983. pp.153, 2 maps.

v. VICTIMS OF A MAP. Translated by ABDULLAH AL‐UDHARI. London, Al‐Saqi Books, 1984. pp.165. £4.95.

vi. PALESTINE AND MODERN ARAB POETRY. By KHALID A. SULAIMAN. London, Zed Books Ltd., 1984. pp.240. £6.95.

vii. L'ARABIE DU SUD: HISTOIRE ET CIVILISATION. By JOSEPH CHELHOD and others. Paris, Maisonneuve & Larose, 1984. pp.264. 21 illustrations, maps, tables. FF 94.

viii. THE TWO YEMENS. By ROBIN BIDWELL. Harlow (UK), Longman/Boulder (USA), Westview. 1983. pp.350.

ix. BAHRAIN AND THE GULF: PAST PERSPECTIVES AND ALTERNATIVE FUTURES. Edited by JEFFREY B. NUGENT and THEODORE H. THOMAS. London, Croom Helm, 1985. pp.221, 26 tables, 4 figs., bibliography. £16.95.

x. THE ARABS. New Edition. By PETER MANSFIELD. Harmondsworth, Penguin, 1985. pp.510, map, index. £4.95/$6.95.

xi. THE EVOLUTION OF MIDDLE EASTERN LANDSCAPES: AN OUTLINE TO AD 1840. By J.M. WAGSTAFF. London, Croom Helm, 1983. pp.304, 459 maps and figs., 5 tables.

xii. THE GREEK MINORITY OF ISTANBUL AND GREEK‐TURKISH RELATIONS 1918–1974. By ALEXIS ALEXANDRIS. Athens, Centre for Asia Minor Studies, 1983.

xiii. SEX AND SOCIETY IN ISLAM: BIRTH CONTROL BEFORE THE NINETEENTH CENTURY. By B.F.MUSALLAM. (Cambridge Studies in Islamic Civilizations). Cambridge, Cambridge University Press, 1983. pp.ix, 176. £17.50.

xiv. TOWARDS A JUST MONETARY SYSTEM. By MUHAMMAD U. CHAPRA. Leicester (UK), The Islamic Foundation, 1985. pp.292. £10.00 (hardback); £4.75 (paperback).

xv. INSURANCE IN AN ISLAMIC ECONOMY. By MUHAMMAD NEJATULLAH SIDDIQUI. Leicester (UK), The Islamic Foundation, 1985. £5.50 (hardback); £2.00 (paperback).

xvi. PARTNERSHIP AND PROFIT SHARING IN ISLAMIC LAW. By MUHAMMAD NEJATULLAH SIDDIQUI. Leicester (UK), The Islamic Foundation, 1985. pp.111. £6.50 (hardback); £2.25 (paperback).

xvii. THE IMMORTAL ATATURK: A PSYCHOBIOGRAPHY. By VAMIK D. VOLKAN and NORMAN ITZKOWITZ. Chicago‐London, Chicago University Press, 1984. pp.xxv, 374. £34.50.

xviii. TURKEY. MERI REPORT. Compiled by MIDDLE EAST RESEARCH INSTITUTE. London, Croom Helm, 198 3. pp.181. £35.00

xix. BORDER AND TERRITORIAL DISPUTES. Edited by ALAN J.DAY. (A Keesing's Reference Publication). Harlow, Longman, 1982. pp.406, 44 maps. £45.00

xx. ‘IF ONLY MY PEOPLE...’ By IMMANUEL JAKOBOVITS. London, Weidenfeld & Nicolson, 1984. pp.288.

xxi. L'IMPRIMERIE ARABE EN OCCIDENT (XVIe, XVIIe XVIIIe SIÈCLES). By JOSÉE BALAGNA. (Islam & Occident, 2.) Paris, Maisonneuve & Larose, 1984. pp.153. 68F.     

A biomechanical study of the human vertebral artery with implications for fatal arterial injury

We studied the biomechanical behaviour of ring and strip specimens from along the length of 18 vertebral arteries taken from 16 subjects aged 28-90 years, in order to consider some of the factors which may play a role in vertebral artery rupture. The method was chosen to allow a comparison between circumferential distension (ring samples) and longitudinal extension, (strip samples). The samples were extended between the jaws of a tensile testing apparatus until the specimen broke and a number of biomechanical parameters were derived. These were the percentage extension to break, the tensile strength, Young's modulus and the peak load. There were a number of important findings. The vertebral artery was shown to be susceptible to longitudinal stretching with a number of strip samples breaking when extended by as little as 16-20%. The tensile strength and load at peak of the strip specimens were correspondingly lower than for the ring samples. Marked intersubject variations were shown for all these parameters and prominent changes in behaviour occurred along the vertebral artery. This study indicates that the artery may be susceptible to head and neck movements which cause the vessel to stretch, and intersubject variations in behaviour may be one important explanation for the marked differences in outcome which appear to exist in subjects who suffer broadly similar head and neck insults.