ANKYLOGLOSSIA
n. A condition marked by the unusual shortness of the lingual frenum, which causes the tongue to experience a restricted…
ANOMALOUS DICHROMATISM
a specific type of color vision in which the individual can only perceive two (as opposed to three) primary colors.…
ANORGASMIA
n. the inability of an individual to achieve a natural orgasm. See also male orgasmic disorder- female orgasmic disorder.
ANTECEDENT
1. an event preceding or occasioning another event - setting the stage for a particular response. 2. In linguistics, the…
ANTHROPOID
adj. resembling a human being in a meaningful way. More specifically, this term refers to apes without tails, for example,…
ANTICHOLINERGIC ILEUS
the paralysis and obstruction of the small bowel muscle, resulting from medications that block muscarinic receptors in this specific area.…
ANTICONFIRMATIONISM
the argument that it is not possible to confirm the truth of general propositions, including scientific research hypotheses, either by…
ANTIPARKINSONIAN AGENTS
drugs that reduce the severity of early symptoms of Parkinson's disease. Symptoms include tremors, movement and gait abnormalities, and muscle…
ANTIVITAMIN
n. a substance or set of substances that interferes with the functions of vitamins in the body. Most antivitamins are…
ANXIETY SENSITIVITY
fear that sensations and physiological reactions associated with anxiety will have harmful consequences. An individual with high natural levels of…
APATHY SYNDROME
describes a pattern of self-preserving emotional insulation (indifference or detachment) adopted by many prisoners- of-war, for example, in an effort…
APPARENT MOVEMENT
an illusion of motion or change of size that is cued by visual tricks. For example, a person sitting in…
APPLIED BEHAVIOR ANALYSIS (ABA)
the practical application of Skinner's behavioral principles (i.e., operant conditioning) in practical settings. Variations of applied behavior analysis may be…
APPREHENSIVENESS
1. a mood state characterized by anxiety or worry. 2. the act or capability of humans to grasp something mentally,…
ARBITRARY MATCHING TO SAMPLE
a variation of a matching to sample task in which the correct alternative during the choice phase represents an arbitrary…
ARCHIVAL RESEARCH
the use of books, journals, documents, data sets, manuscripts, and other records or cultural artifacts in scientific research, that do…
ARMY RESEARCH INSTITUTE (ARI)
the U.S. Army Research Institute for the Behavioral and Social Sciences has its headquarters in Alexandria, Virginia, and first opened…