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a laboratory animal in which specific genes are present but unexpressed

Mental retardation is uncommon but many affected individuals have behavioural problems. Also called XXY syndrome, it is a chromosomal disorder affecting males born with...

a brief characteristic of electrical activity recorded from the brain during the early stages of sleep. It may also be associated with nocturnal epileptic...

It is a benevolent and helpful action intentionally directed towards another person, it is motivated by the desire to help another and not to...

an organism in which a particular gene has been eliminated or inactivated by an experimenter

An illusion that may be the basis for the myth that performance in sport is improved by first practising with a heavier than normal...

It yields scores that reflect these two kinds of abilities and the intelligence based upon the theory of fluid and crystallized abilities. In can...

Modern classifications recognize five kingdoms, Bacteria, Protista or Protoctista, Animalia, Fungi and Plantae which in some systems are grouped into domains, traditionally the highest...

Rraepelin, the great classifier of mental illnesses, was bom in Neustrelitz, Germany and studied medicine at Wurzburg and Munich. He then went to Leipzig,...

The appearance of electro-graphic and fully generalized behavioural convulsions. It is phenomenon in which brain function is altered as a consequence of repeated minor...