เปรียบเทียบวิธี

	Glottochronology	ระเบียบวิธีเปรียบเทียบ
สาขาวิชา	ภาษาศาสตร์	ภาษาศาสตร์
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1950	1786
ผู้ริเริ่ม	Morris Swadesh	Sir William Jones
ประเภท	Empirical process pipeline	Empirical process pipeline
แหล่งต้นตำรับ	Swadesh, M. (1950). Salish internal relationships. International Journal of American Linguistics, 16(3), 157-167.	Hock, H. H. (1991). Principles of Historical Linguistics (2nd ed.). Berlin: Mouton de Gruyter.
ชื่อเรียกอื่น	Lexicostatistics, Glottochronological Dating	Historical Comparative Linguistics, Genetic Linguistics
ที่เกี่ยวข้อง	2	4
สรุป	Glottochronology, or lexicostatistics, is a quantitative method in historical linguistics that estimates the time of divergence between related languages based on the proportion of shared cognates in their basic vocabularies. Developed by Morris Swadesh in 1950, the method assumes that core vocabulary items change at a relatively constant rate over time, allowing linguists to calculate a 'time depth'—how long ago two languages shared a common ancestor. Though controversial due to its restrictive assumptions, glottochronology provides rough temporal estimates when archaeological or written records are unavailable.	The Comparative Method is a foundational technique in historical linguistics for reconstructing ancestral languages and establishing genetic relationships between related languages. Pioneered by Sir William Jones in 1786, it systematically compares phonological, morphological, and lexical features across languages to identify regular sound correspondences and trace their shared origins. This method underpins modern historical linguistics and has been essential for understanding language families worldwide.