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  2. Role-taking theory - Wikipedia

    en.wikipedia.org/wiki/Role-taking_theory

    Robert Selman developed his developmental theory of role-taking ability based on four sources. [4] The first is the work of M. H. Feffer (1959, 1971), [5] [6] and Feffer and Gourevitch (1960), [7] which related role-taking ability to Piaget's theory of social decentering, and developed a projective test to assess children's ability to decenter as they mature. [4]

  3. Prehistoric technology - Wikipedia

    en.wikipedia.org/wiki/Prehistoric_technology

    The Stone Age is a broad prehistoric period during which stone was widely used in the manufacture of implements with a sharp edge, a point, or a percussion surface. The period lasted roughly 2.5 million years, from the time of early hominids to Homo sapiens in the later Pleistocene era, and largely ended between 6000 and 2000 BCE with the advent of metalworking.

  4. Computer (occupation) - Wikipedia

    en.wikipedia.org/wiki/Computer_(occupation)

    In this usage, "human computer" refers to activities of humans in the context of human-based computation (HBC). This use of "human computer" is debatable for the following reason: HBC is a computational technique where a machine outsources certain parts of a task to humans to perform, which are not necessarily algorithmic.

  5. History of computing - Wikipedia

    en.wikipedia.org/wiki/History_of_computing

    The first digital electronic computer was developed in the period April 1936 - June 1939, in the IBM Patent Department, Endicott, New York by Arthur Halsey Dickinson. [35] [36] [37] In this computer IBM introduced, a calculating device with a keyboard, processor and electronic output (display). The competitor to IBM was the digital electronic ...

  6. History of software - Wikipedia

    en.wikipedia.org/wiki/History_of_software

    Computer science is more theoretical (Turing's essay is an example of computer science), whereas software engineering is focused on more practical concerns. However, prior to 1946, software as we now understand it – programs stored in the memory of stored-program digital computers – did not yet exist.

  7. Role theory - Wikipedia

    en.wikipedia.org/wiki/Role_theory

    Role strain or "role pressure" may arise when there is a conflict in the demands of roles, when an individual does not agree with the assessment of others concerning his or her performance in his or her role, or from accepting roles that are beyond an individual's capacity. Role making is defined by Graen as leader–member exchange.

  8. History of computer science - Wikipedia

    en.wikipedia.org/wiki/History_of_computer_science

    In 1941, Konrad Zuse developed the world's first functional program-controlled computer, the Z3. In 1998, it was shown to be Turing-complete in principle. [57] [58] Zuse also developed the S2 computing machine, considered the first process control computer.

  9. Outline of prehistoric technology - Wikipedia

    en.wikipedia.org/wiki/Outline_of_prehistoric...

    Stone Age – broad prehistoric period, lasting roughly 2.5 million years, during which stone was widely used in the manufacture of implements with a sharp edge, a point, or a percussion surface. The period began with hominids and ended between 6000 and 2000 BCE with the advent of metalworking.