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Angus McIntyre, Aging and Political Leadership , State University of New York Press, Albany, New York, 1988, 316 pp., pbk $14.95, ISBN 0 887 06824 3.

the persistence of gender differentials with respect to both earnings and survivorship probabilities would suggest that this problem will not be entirely ameliorated except by policy decisions. While Professor McDaniel has chosen to concentrate her work on the implications of population ageing, rather than the demographic parameters which underlie the process, there are instances in the book where the reader might wish some elucidation regarding one or another of the demographic arguments advanced. For example, McDaniel argues that the absence of severe economic problems in nations much older than Canada, such as Sweden or West Germany, could be taken to mean that population ageing need not imply adverse economic consequences. While this might be reassuring to some, it should be understood that the prospective ageing of Canada (in terms of share aged 65 and over or in terms of median age) is much greater than that hitherto experienced by these presently 'older' societies. In considering the possible role of immigration as a means of lessening the impact of ageing in Canada, McDaniel suggests that it is not clear how much immigration would be needed to offset ageing, but then states that it is doubtful that Canada would be willing to modify existing policies to whatever extent would be necessary. This would seem to be an empirically researchable question, rather than one to be dismissed out of hand. Finally, in discussing alternative scenarios of the future population of Canada, McDaniel reports on research which considers the impact of fertility and immigration variation, but not of mortality. However, mortality change among the older population might make a substantial difference in the size and, especially, the structure of Canada's future elderly. Indeed, the entire issue of the alleged ' rectangularization' of mortality and its consequences for the age composition of the older population is given comparatively short shrift by Professor McDaniel.