- A doctrine, or scheme of things, which terminates in
speculation or contemplation, without a view to practice; hypothesis;
speculation. - An exposition of the general or abstract principles of any
science; as, the theory of music. - The science, as distinguished from the art; as, the theory
and practice of medicine. - The philosophical explanation of phenomena, either physical
or moral; as, Lavoisier's theory of combustion; Adam Smith's theory of
moral sentiments.
Meaning of 'theory' (Princeton's WordNet)
1 . theory
[ n]
Meaning (1): - a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena
Example in sentence:
a scientific hypothesis that survives experimental testing becomes a scientific theory;
he proposed a fresh theory of alkalis that later was accepted in chemical practices
Meaning (2): - a belief that can guide behavior
Example in sentence:
the architect has a theory that more is less;
they killed him on the theory that dead men tell no tales
Meaning (3): - a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
Example in sentence:
theories can incorporate facts and laws and tested hypotheses;
Young-Helmholtz Theory Young-Helmholtz Theory is the best known theory of colour vision which suggests that the retina contains three types of colour receptors for red, green and blue and that all other
Stage theory Stage theory is a theory such as that of Piaget that conceives of a developmental process taking place in a series of non-arbitrary, sequential and progressive
Systems theory Systems theory is system is usually considered to be a series of interconnected elements forming an organized or organic whole, e.g. central nervous system
Social identity theory Social identity theory is the idea that we readily divide people into in groups and out-groups and that we find in-groups attractive because belonging to them enhances our self-esteem.
Signal detection theory Signal detection theory is an alternative to the concept of an absolute threshold of sensation which suggests that perception (detection) of a stimulus (signal) is related
Reactance theory Reactance theory is a concept in social psychology which holds that people will react against attempts to curtail their choices and influence their decisions by finding
Information theory Information theory is a study of the nature of information and the way it is communicated. It was originated by mathematicians and engineers and draws heavily on concepts
James-Lange theory of emotions James-Lange theory of emotions is a fusion of two similar theories of the emotions put forward by the American philosopher William James and the Danish
Implicit personality theory Implicit personality theory is the unquestioned assumptions an individual uses in thinking about the personality of another person; specifically, the characteristics that tend to be associated with
Great-man theory Great-man theory is the idea that the course of events is influenced at crucial times by the actions of outstanding men. As a way of understanding