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.
References in periodicals archive ?
In order to analyze the temporal dynamics of the land use/cover of the Sierra Norte de Sevilla Natural Park, a diachronic study was carried out.
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.
Three of the essays consider the diachronic study of texts, with an eye not necessarily on the original version but on an altered version.
From Lineage to State is a diachronic study of ancient Indian political and social systems.
Her diachronic study of scene shifts nicely illustrates how well narratology and history can combine to illuminate changes in narrative form over time.
Lombardi's diachronic study moves from the preistoria of the feminist movement to late 20th-century backlash against progress attained by that movement.
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.
9:15 FAUNAL EXPLOITATION AT THE DIAMONDHEAD SITE (22HA550): A DIACHRONIC STUDY OF SUBSISTENCE STRATEGIES AT A GULF COAST SHELL MIDDEN
She begins with specific problems and questions pertinent to the study of ancient Israel from a feminist perspective, then gives a brief diachronic study of what can be known of ancient Israelite women.
Published during a period of relative German economic and social malaise in which Germans are once again comparing their own nation to the American model and seeking both to imitate and improve on it, Schmidt's monograph is an excellent synchronic and diachronic study of mentalities characterized by long duration.
As the foregoing reference to Kleiner's remarks on plot and theme in 1 Samuel 28 already suggests, the sections in his book devoted to professedly synchronic study seem at least as much intended to show up its alleged limitations as its possibilities, and hence to demonstrate the necessity for, and the supremacy of, diachronic study.
She instead conducts a diachronic study, pointing out how some forms of theatre functioned differently in various places over time.