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Lexico statistical dating

The latter is a distance based method but the comparative method considers language characters directly.The lexicostatistics method is a simple and fast technique relative to the comparative method but has limitations that are discussed below.

This is merely one application of lexicostatistics, however; other applications of it may not share the assumption of a constant rate of change for basic lexical items.

It can be validated by cross-checking the trees produced by both methods.

Lexicostatistics was developed by Morris Swadesh in a series of articles in the 1950s, based on earlier ideas, the concept's first known use was by Dumont d'Urville in 1834 who compared various "Oceanic" languages and proposed a method for calculating a coefficient of relationship.

Whereas the comparative method used shared identified innovations to determine sub-groups, lexicostatistics does not identify these.

Lexicostatistics is a distance-based method, whereas the comparative method considers language characters directly, the lexicostatistics method is a simple and fast technique relative to the comparative method but has limitations (discussed below).

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  1. When the word-list analysis results indicate a lexical similarity between two speech forms of less than about 70% at the upper confidence limit of the calculation, this generally indicates that these are different languages. If the similarity is more than 70%, dialect intelligibility testing is needed to determine how well.

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