CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Under the Tree Model, splits are assumed to be the only force underlying the formation of subgroups; this constitutes an aprioristic axiom for the whole model to hold together. By contrast, under a Wave approach, the identification of such splits is an empirical – and falsifiable – result of observation.

Detailed explanation-2: -THE FAMILY TREE THEORY In keeping with the analogy of language relationships to human families, the theory makes use of the terms parent (or mother), daughter, and sister languages. For example, in the family tree of IE, French and Spanish are sisters, both are daughters of Latin; Germanic is the mother of English.

Detailed explanation-3: -In historical linguistics, the wave model or wave theory (German Wellentheorie) is a model of language change in which a new language feature (innovation) or a new combination of language features spreads from its region of origin, affecting a gradually expanding cluster of dialects.

Detailed explanation-4: -August Schleicher, a 19th century linguist, who devised the language tree model in 1861, suggested the method of validating the genetic relationship among languages and reconstruction of their parental proto-language, which is called the historical comparative method.