WebEvolutionary theories. Illustration from Charles Darwin's The Expression of the Emotions in Man and Animals (1872) 19th century. Perspectives on emotions from evolutionary theory were ... In linguistics, the expression of emotion may change to the meaning of sounds. In education, the role of emotions in relation to learning is examined. Social sciences often …

WebLogical fallacy. As an informal fallacy, the red herring falls into a broad class of relevance fallacies. Unlike the straw man, which involves a distortion of the other party's position, the red herring is a seemingly plausible, though ultimately irrelevant, diversionary tactic. According to the Oxford English Dictionary, a red herring may be intentional or …

WebAn early institution often called a university is the Harran University, founded in the late 8th century. Scholars occasionally call the University of al-Qarawiyyin (name given in 1963), founded as a mosque by Fatima al-Fihri in 859, a university, although Jacques Verger writes that this is done out of scholarly convenience. Several scholars consider that al …

WebStructural linguistics, or structuralism, in linguistics, denotes schools or theories in which language is conceived as a self-contained, self-regulating semiotic system whose elements are defined by their relationship to other elements within the system. It is derived from the work of Swiss linguist Ferdinand de Saussure and is part of the overall approach of …

WebSpeciation is the evolutionary process by which populations evolve to become distinct species.The biologist Orator F. Cook coined the term in 1906 for cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution within lineages. Charles Darwin was the first to describe the role of natural selection in speciation in his 1859 book On …

WebIn mathematics, graph theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects.A graph in this context is made up of vertices (also called nodes or points) which are connected by edges (also called links or lines).A distinction is made between undirected graphs, where edges link two vertices …

WebKoinophilia is an evolutionary hypothesis proposing that during sexual selection, animals preferentially seek mates with a minimum of unusual or mutant features, including functionality, appearance and behavior. Koinophilia intends to explain the clustering of sexual organisms into species and other issues described by Darwin's Dilemma. The …