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World map of linguistic diversity index (linearly proportional to the shading intensity). Data is from the 18th edition of Ethnologue: Languages of the World.. Linguistic diversity index (LDI) may refer to either Greenberg's (language) Diversity Index [1] or the related Index of Linguistic Diversity (ILD) from Terralingua, which measures changes in the underlying LDI over time.
Current distribution of human language families. Human languages ranked by their number of native speakers are as follows. All such rankings should be used with caution, because it is not possible to devise a coherent set of linguistic criteria for distinguishing languages in a dialect continuum. [1]
In the Foreign Service Institute’s language classification system, the most difficult languages are at Category 5. These take 88 weeks or 2,200 hours of classroom time to reach proficiency.
Language complexity is a topic in linguistics which can be divided into several sub-topics such as phonological, morphological, syntactic, and semantic complexity. [1] [2] The subject also carries importance for language evolution. [3] Language complexity has been studied less than many other traditional fields of linguistics.
This is a list of languages by total number of speakers. It is difficult to define what constitutes a language as opposed to a dialect . For example, Chinese and Arabic are sometimes considered single languages, but each includes several mutually unintelligible varieties , and so they are sometimes considered language families instead.
The EF English Proficiency Index (EF EPI) attempts to rank countries by the equity of English language skills amongst those adults who took the EF test. [2] It is the product of EF Education First, an international education company, and draws its conclusions from data collected via English tests available for free over the internet.
This is a list of countries by number of languages according to the 22nd edition of Ethnologue (2019). [ 1 ] Papua New Guinea has the largest number of languages in the world.
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