cocaine dependence

in DSM–IV–TR, repeated or continued use of cocaine despite significant cocaine-related behavioral, physiological, and psychosocial problems and tolerance or characteristic withdrawal symptoms if use is suspended. In DSM–5, cocaine dependence has been combined with cocaine abuse into a single disorder, and neither is considered a distinct diagnosis any longer (see stimulant use disorder). See also substance dependence.

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Psychology term of the day

November 16th 2024

Doppler effect

the apparent increase or decrease in wavelength or frequency observed when a source of electromagnetic radiation or sound approaches or recedes from the observer or listener, producing a change in hue or pitch. The total Doppler effect may result from motion of the source, observer, or medium (such as a sound wave). [Christian Andreas Doppler (1803–1853), Austrian mathematician]