diachronic study

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lon·gi·tu·di·nal stud·y

a study of the natural course of life or disorder in which a cohort of subjects is serially observed over a period of time and no assumptions need be made about the stability of the system.

Synonym(s): diachronic study

longitudinal study

An epidemiologic study that follows a population forward over time, evaluating the effects of one or more variables on a process. If individuals are followed, it is termed a longitudinal cohort study. If classes—e.g., age classes—are studied, it is a longitudinal cross-sectional study. Longitudinal studies are the converse of horizontal studies.

Examples
Cohort studies; case-control studies; Framingham Study in Massachusetts, US; Port Pirie study, an ongoing analysis of the long-term effects of blood lead levels on IQ.

di·a·chron·ic study

(dī-ă-kron'ik stŭd'ē)

A study of the natural course of a life or disorder in which a cohort of subjects is serially observed over a period of time and no assumptions need be made about the stability of the system.

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References in periodicals archive ?

The first is that Embodying Masculinities presents itself as a diachronic study and yet it does not provide an analysis of the masculine bodies in the 1940s.

Josep Maria Armengol, ed. 2013. Embodying Masculinities. Towards a History of the Male Body in U.S. Culture and Literature

The contribution by Nila Vazquez, Laura Esteban-Segura and Teresa Marques-Aguado fills a different gap: instead of using (historical) corpora for the diachronic study of English, what they provide is a survey of the most important (computerized) English historical corpora.

Introduction

Heyworth's diachronic study envisages mutability of form as an all-pervasive process in the output of the magister amoris and confidently traces its uncanny influence.

Heyworth, Gregory, Desiring Bodies: Ovidian Romance and the Cult of Form

Three of the essays consider the diachronic study of texts, with an eye not necessarily on the original version but on an altered version.

Sian Echard and Stephen Partridge, eds. The Book Unbound: Editing and Reading Medieval Manuscripts and Texts

From Lineage to State is a diachronic study of ancient Indian political and social systems.

"Reinterpreting Indian history"

Her diachronic study of scene shifts nicely illustrates how well narratology and history can combine to illuminate changes in narrative form over time.

Editor's column

Lombardi's diachronic study moves from the preistoria of the feminist movement to late 20th-century backlash against progress attained by that movement.

Giancarlo Lombardi. Rooms with a View: Feminist Diary Fiction, 1952-1999

The editors describe this approach as a "diachronic study of utopias," and as "but one of the ways of expressing the social imagination" (10).

Dictionary of Literary Utopias. (Book Reviews)

Her emphasis on tracing the processes of change has resulted in a diachronic study of house forms, displacing the more static and synchronic image of "tradition" which is common in other works.

La Maison Balinaise en Secteur Urbain: Etude Ethno-Architecturale

9:15 FAUNAL EXPLOITATION AT THE DIAMONDHEAD SITE (22HA550): A DIACHRONIC STUDY OF SUBSISTENCE STRATEGIES AT A GULF COAST SHELL MIDDEN