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slipped disk

a condition in which the gelatinous interior of an intervertebral disk is pushed through a weakened portion of its fibrous coating, pressing on adjacent nerve roots and associated structures. This causes pain in the back, leg, or arm, depending on the position of the disk and the nerve involved, and sometimes nerve damage (resulting in numbness, weakness, etc.). The sciatic nerve is most commonly affected. The medical name for this condition is prolapsed intervertebral disk.

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Psychology term of the day

November 22nd 2024

Theory X and Y

Theory X and Y

two contrasting types of managerial philosophy: Theory X managers assume that workers are passive, lazy, and motivated only by money and security, whereas Theory Y managers assume that workers want to grow psychologically and desire autonomy and responsibility. It is hypothesized that these assumptions are self-fulfilling, so that workers who are subjected to Theory X management will act in a lazy and untrustworthy manner, and those who are subjected to Theory Y management and are provided with a workplace that encourages psychological growth will show creativity and initiative. A Theory X manager is authoritarian in leadership style, whereas a Theory Y manager is participative and democratic. [described by Douglas McGregor (1906–1964), U.S. management consultant and social psychologist]