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  2. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [ 4 ] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users.

  3. Matching (statistics) - Wikipedia

    en.wikipedia.org/wiki/Matching_(statistics)

    Matching is a statistical technique that evaluates the effect of a treatment by comparing the treated and the non-treated units in an observational study or quasi-experiment (i.e. when the treatment is not randomly assigned).

  4. Optimal matching - Wikipedia

    en.wikipedia.org/wiki/Optimal_matching

    Optimal matching is a sequence analysis method used in social science, to assess the dissimilarity of ordered arrays of tokens that usually represent a time-ordered sequence of socio-economic states two individuals have experienced.

  5. Social system - Wikipedia

    en.wikipedia.org/wiki/Social_system

    In sociology, a social system is the patterned network of relationships constituting a coherent whole that exist between individuals, groups, and institutions. [1] It is the formal structure of role and status that can form in a small, stable group. [ 1 ]

  6. Social equilibrium - Wikipedia

    en.wikipedia.org/wiki/Social_equilibrium

    In sociology, a system is said to be in social equilibrium when there is a dynamic working balance among its interdependent parts. [1] Each subsystem will adjust to any change in the other subsystems and will continue to do so until an equilibrium is retained. The process of achieving equilibrium will only work if the changes happen slowly.

  7. Search and matching theory (economics) - Wikipedia

    en.wikipedia.org/wiki/Search_and_matching_theory...

    A matching function is a mathematical relationship that describes the formation of new relationships (also called 'matches') from unmatched agents of the appropriate types. For example, in the context of job formation, matching functions are sometimes assumed to have the following ' Cobb–Douglas ' form:

  8. Types of social groups - Wikipedia

    en.wikipedia.org/wiki/Types_of_Social_Groups

    In sociological terms, groups can fundamentally be distinguished from one another by the extent to which their nature influence individuals and how. [2] [3] A primary group, for instance, is a small social group whose members share close, personal, enduring relationships with one another (e.g. family, childhood friend).

  9. Social psychology (sociology) - Wikipedia

    en.wikipedia.org/wiki/Social_psychology_(sociology)

    In sociology, social psychology (also known as sociological social psychology) studies the relationship between the individual and society. [1] [2] Although studying many of the same substantive topics as its counterpart in the field of psychology, sociological social psychology places relatively more emphasis on the influence of social structure and culture on individual outcomes, such as ...