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Abecedarian Project an early intervention demonstration project that began in the 1970s at the University of North Carolina at Chapel Hill, the…

Abduction n.1. movement of a limb away from the midline of the body. Any muscle that produces such movement is called an abductor. Compare adduction.…

Abducens Nucleus a collection of nerve cells in the floor of the fourth ventricle of the brain, from which the abducens nerve originates.

Abducens Nerve the sixth cranial nerve, carrying motor fibers for control of the lateral rectus muscle of the eye, which rotates the eyeball…

Abdominal Migraine recurrent, severe episodes of abdominal pain that may be accompanied by nausea and vomiting. The episodes last from 1 to…

ABCDE technique an extension of ABC theory to include the procedure used in rational emotive behavior therapy of Disputing irrational beliefs to achieve several types of Effects (e.g.,…

ABC theory the conceptual framework underlying rational emotive behavior therapy, which suggests that Activating events (i.e., adversities) are mediated by irrational Beliefs in determining inappropriate…

Abatement n. a reduction or lessening in the severity of pain or other symptoms of illness or disorder.

Abasia n. severe impairment or complete loss of the ability to walk due to problems in motor coordination. —abasic adj.

Abandonment Reaction A feeling of emotional deprivation, loss of support, and loneliness experienced by children who have been deserted or neglected by…