| experience | The feeling of emotions and sensations, as opposed to thinking; involvement in what is happening rather than abstract reflection on an event or interpersonal encounter. Origin: L. Experientia, fr. Experior, to try (05 Mar 2000) |
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| experienced | Taught by practice or by repeated observations; skillful or wise by means of trials, use, or observation; as, an experienced physician, workman, soldier; an experienced eye. "The ablest and most experienced statesmen." (Bancroft) Source: Websters Dictionary (01 Mar 1998) |
| experiment | Noun: A procedure done in a controlled environment for the purpose of gathering observations, data, or facts, demonstrating known facts or theories, or testing hypotheses or theories. Verb: To carry out such a procedure. (09 Oct 1997) |
| experimental | 1. Of, relating to or based on experience: empirical. 2. Of a disease: intentionally produced especially in laboratory animals for the purpose of study. (18 Nov 1997) |
| experimental allergic encephalitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental allergic encephalomyelitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental error | The total error of measurement ascribed to the conduct of an empirical observation. It is commonly expressed as the standard deviation of replicated experiments. There may be many components, including those in the sampling procedure, the measurements, injudicious choice of a model, observer bias, etc. (05 Mar 2000) |
| experimental group | A group of subjects exposed to the variable of an experiment, as opposed to the control group. (05 Mar 2000) |
| experimental medicine | The scientific investigation of medical problems by experimentation upon animals or by clinical research. (05 Mar 2000) |
| experimental method | In experimental psychology, control of environmental, physiological, or attitudinal factors to observe dependent changes in aspects of experience and behaviour. (05 Mar 2000) |
| experimental neurosis | A behaviour disorder produced experimentally, as when an organism is required to make a discrimination of extreme difficulty and "breaks down" in the process. (05 Mar 2000) |
| experimental psychology | A subdiscipline within the science of psychology that is concerned with the study of conditioning, learning, perception, motivation, emotion, language, and thinking, also used in relation to subject-matter areas in which experimental, in contrast to correlational or socio-experiential, methods are emphasized. (05 Mar 2000) |
| experimenter effects | The influence of the experimenter's behaviour, personality traits, or expectancies on the results of that person's own research. See: double blind study. (05 Mar 2000) |
| expert system | Expert systems are computer programs designed to simulate the problem-solving behaviour of human experts within very narrow domains or scientific disciplines (entomology, plant pathology, etc.). This discipline is a sub-set of Artificial Intelligence. See: artificial intelligence. Synonym: knowledge-based systems (13 Jan 1998) |
| expert systems | Computer programs based on knowledge developed from consultation with experts on a problem, and the processing and/or formalizing of this knowledge using these programs in such a manner that the problems may be solved. (12 Dec 1998) |