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ANTIGEN

n. any substance that is recognized by the immune system as being foreign and therefore dangerous. The body then produces

ANTIPSYCHOTICS

n. pharmacological agents used in the treatment of schizophrenia, mania, delirium, and other forms of thought disorder and uncontrolled behavioral

ANXIETY DISTURBANCE

a partially genetic condition characterized by a marked, persistent, and excessive amounts of worry that cause a significant degree of

ANXIOUS-AVOIDANT ATTACHMENT

in the strange situation experiment, designed by Mary Ainsworth, a form of attachment whereby an infant explores only minimally and

APHASIA

u. refers to loss or impairment in the ability to understand or comprehend language - or to express oneself through

APOPLECTICUS

A form of the word apoplectic, meaning enraged. |defined by Greek physician Hippocrates (c. 460-c. 311 BCE)

APPERCEPTION

n. 1. the process of perceiving something consciously and mindfully. 2. the mental process bv which a perception or an

APPLIED SPORT PSYCHOLOGY

the study of sport psychology in a research setting with the aim of enhancing or making consistent the performance of

APPROACH-APPROACH CONFLICT

an emotionally conflicted situation involving a choice between two equally desirable but incompatible goals, for example, a person may want

APTITUDE MEASURE

a unit, instrument, assessment, or system that works by calculating one

ARCHETYPE

1. a perfect or typical example of something or the original model from which other models are supposed to replicate.

AREA SAMPLING

one of many methods of selecting individuals for research. Generally, specific neighborhoods, streets, homes, or other geographic areas are designated

ARISTOTELIAN METHOD

refers to an approach to knowledge emphasizing deductive (i.e., not primarily empirical) procedures - for example, deducing conclusions from similar

AROMATIC

adj. in the Zwaardemaker smell system, this denotes an odor quality that may be smelled in spices and camphor.

ARPEGGIO PARADOX

the contradiction of the stimulus-response view of a chain of behavior, evidenced by the speed at which accomplished pianists play

ARTHRITIS

n. any inflammation of a joint, often accompanied by pain, and muscle and bone stiffness around the affected joint. There

ARTIFACT IN RESEARCH

an extraneous and unintended factor affecting the results of research, especially one associated with the researcher (e.g., expectations, personality) or

ASCENDING-DESCENDING SERIES

in psychophysics, this refers to two sets of stimuli

ASPERMIA

refers to the failure of the male reproductive organs to produce or emit semen. Also known as aspcrmatism.

ASSIGNMENT THERAPY

a specific technique used in group therapy to enhance group cohesiveness and communication among the participants. A sociometric test is