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This paper offers an empirical and analytic foundation for regarding period life expectancy as a lagged indicator of the experience of real cohorts in populations experiencing steady improvement in mortality. We find that current period life expectancy in the industrialized world applies to cohorts born some 40-50 years ago. Lags track an average age at which future years of life are being gained, in a sense that we make precise. Our findings augment Ryder's classic results on period-cohort translation. [ABSTRACT FROM AUTHOR]

This paper proposes core innovations in the strategy of research on demographic behaviour. One aim is a shift of attention away from events and towards a focus on dynamic processes and their interplay: away from a preoccupation with marriage and divorce, births, deaths, migrations, and household structure towards a broader perspective that takes account of partnership and intimacy, parenthood, potential and well-being, position in society and space, and personal ties. Another aim is a much closer engagement with genetics, neuroscience, psychology, and behavioural economics. A third aim is a strategy that pays more attention to pathways within the individual, to the processes entailed when the individual interacts with various contexts, and to progressions that involve the interplay of the pathways and processes through the life course. These shifts of emphasis, which have already begun to occur, require a systematic reassessment of priorities for research on demographic behaviour. [ABSTRACT FROM AUTHOR]

This paper reviews half a century of research into the determinants of fertility. It is argued that the quest for the determinants of fertility behaviour and change during that period can best be interpreted as the development of a series of sub-narratives from different disciplinary perspectives and orientations. These are normally based upon the initial narrative of the demographic transition and usually take the form of a verbal theory illustrated by a 'box and arrow' diagram. On occasions formalization has been attempted. Different parts of the initial narrative have been highlighted at different times depending on policy interest, improvements in technical skills, availability of data, changes in social setting, and the degree of satisfaction with the dominant sub-narrative of the day. There is every reason to believe that the research process identified will continue and will lead to a further accumulation of knowledge. In fact, all important variables have probably already been identified. That it will, ultimately, lead to a single, consolidated narrative fully satisfactory for all settings and for all time is, however, highly unlikely. [ABSTRACT FROM AUTHOR]

This paper attempts to define the field of demography, identify the demographer, assess the extent to which demography is a social science and relate it to the other social sciences. It examines how changes in the outside world affect what demographers do and what they publish. As befits Population Studies's 50th anniversary, the role of journals, and especially of this journal is examined. The early role of the journal and of its longtime two editors in defining the field is discussed. The interface between demography and the other social sciences is examined, as is the extent to which demographers publish in journals other than specialist population ones. [ABSTRACT FROM AUTHOR]