Cohesiveness refers to a "we feeling "; the extent to which members of a group are bound together, such as by attraction for one another.

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Cohort refers to a group of individuals sharing certain significant social characteristics in common, such as sex, time, and place of birth.

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Cohort analysis refers to a social scientific technique which studies a population that shares common characteristics, over time.

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cohort effect refers to observation that people of different age groups differ in their values and experiences.

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- Cohort model : Cohort model is a model of auditory Word recognition in which listeners are assumed to develop a Group of candidates, a word initial cohort, and then determine which member of that c

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Deutsch: Kohorten-Verlaufsstudie / Español: Estudio secuencial de cohorte / Português: Estudo sequencial de coorte / Français: Étude séquentielle de cohorte / Italiano: Studio sequenziale di coorte /

- Cohort sequential study : Cohort sequential study refers to a research design that combines cross-sectional and longitudinal methods. Cohorts consist of participants in a certain age group. Different cohorts are studied at different times. New cohorts of younger groups are added in successive data collections to replace those who have grown older. This design allows the analysis of age differences, changes over time, and the effects of social and historical factors.

- Cohort study : Cohort study is a study in which some specific sub-population, or cohort, is studied over time, although data may be collected from different members in each set of observations. An example of a Chort Study would be a study of the occupational history of the class of 1980, in which questionnaires will sent every five (5) years

Cohorts are the people who are equivalent in age to a person being examined in a study of development. They are individuals who were born at roughly the same time and grew up under similar circumstances.