Neuropsychology is the study of the structure and function of the brain as they relate to specific psychological processes and behaviours. It is an experimental field of psychology that aims to understand how behavior and cognition are influenced by brain functioning and is concerned with the diagnosis and treatment of behavioral and cognitive effects of neurological disorders. Whereas classical neurology focuses on the physiology of the nervous system and classical psychology is largely divorced from it, neuropsychology seeks to discover how the brain correlates with the mind. It thus shares concepts and concerns with neuropsychiatry and with behavioral neurology in general. The term neuropsychology has been applied to lesion studies in humans and animals. It has also been applied in efforts to record electrical activity from individual cells (or groups of cells) in higher primates (including some studies of human patients). It makes use of neuroscience, and shares an information processing view of the mind with cognitive psychology and cognitive science.
Precedents are not mere dusty phrases, which do not substantially affect the question before us. A precedent embalms a principle. The principle may be right or may be wrong—that is a question for discussion; but at the first glance it is right to conclude that it is a principle that has been acted upon and recognised by those who preceded us.
Benjamin Disraeli, Speech in the House of Commons (22 February 1848)
I wish to establish some sort of system not guided by chance but by some sort of definite and exact principle.
Dmitri Mendeleev, Lecture to the Russian Chemical Society as quoted in "Peering Into the Unseen—What Is Revealed?" in Awake! magazine (22 August 2000).