News from the field

Two problems are always present in any research: reliability and validity, and this paper will attempt to assess reliability and validity in relation to dietary data. Reliability means stability of results over a period of time or in similar situations. (It is very difficult to find two identical situations, especially outside a laboratory, as some variation is always introduced.) Validity refers to the accuracy of techniques and results. It includes the idea of measuring methods and results against a standard or criterion.     

Health care reform and older adults: notes from the Polish experience

Poland enacted in 1997 legislation that founded a health care system in which health insurance societies contract with providers to deliver health services to the insured population. Through a review of the new statutes, interviews with key informants, analysis of public opinion polls and surveys of insurance administrators and health care workers, we examined the impact of reform on Poland's older citizens. The findings indicate that older adults are likely to be adversely affected by the inadequacies of insurance premiums as a source of finance, the lack of emergent private medical enterprise, and the failure to eradicate private health in its earlier, black market incarnation.     

Measuring the Integration of Immigrants: Critical notes from an Italian experience

This paper describes an instrument developed in Italy by the ISMU Foundation to measure the level of integration of immigrants present in the country. The instrument consists of an index based on data collected by means of a structured questionnaire. The paper first describes the technical characteristics of this instrument and the main results obtained from its first, experimental use with the administration of over 12,000 interviews in Italy. There follow some critical notes on the limits and potential of the application of synthetic indexes in the analysis of migratory processes, and particularly in study of the integration of immigrants.     

Book notes

THE SOCIETAL SUBJECT edited by N. Engelsted, M. Hedegaard, B. Karpatscholf, and A. Mortensen. Aarhus: Aarhus University Press, 1993. $26.00.

UNDERSTANDING PRACTICE: PERSPECTIVES ON ACTIVITY AND CONTEXT edited by S. Chaiklin and J. Lave. Cambridge: Cambridge University Press, 1993. $59.95.

THE CULTURAL‐HISTORICAL DEVELOPMENT OF VERBAL THINKING by Peeter Tulviste (Translated by M. J. Hall; Preface by M. Cole). Commack, NY: NOVA Science Publishers, 1991. 183 pp. + notes and references. $39.00.