A study by Russell D. Gray and Quentin D. Atkinson uses computational methods from evolutionary biology to analyze linguistic data and supports the Anatolian theory of the origin of the Indo-European language family. The analysis of 87 Indo-European languages with 2,449 lexical items estimated the initial divergence of Indo-European languages between 7,800 and 9,800 years ago, aligning with the Anatolian farming hypothesis. This hypothesis suggests that Indo-European languages spread with the spread of agriculture from Anatolia around 8,000 to 9,500 years ago. The results were robust to various changes in coding procedures, calibration points, and Bayesian analysis. The study addresses the limitations of traditional methods like glottochronology, which rely on the assumption of a constant rate of lexical replacement. Recent advances in computational phylogenetic methods allow for more accurate estimation of divergence times by incorporating Bayesian inference and rate smoothing algorithms. These methods account for variations in evolutionary rates and borrowing between languages, leading to more reliable divergence time estimates. The analysis used a database of 95 Indo-European languages and three extinct languages, with cognate sets coded as binary characters. The results showed a strong tree-like signal in the data, with a consensus tree consistent with traditional Indo-European language groups. The tree also reflected uncertainties in the relationships between major language groups, such as the Albanian group. The study found that the divergence time estimates were consistent with the Anatolian farming theory, suggesting that agriculture played a key role in the spread of Indo-European languages. The results also showed that the initial analysis may have underestimated the age of Indo-European due to the influence of chance similarities and unrecognised borrowings. The study used various methods to account for these biases, including constraint trees and missing data coding. The findings support the Anatolian theory of Indo-European origin, suggesting that the spread of agriculture from Anatolia played a significant role in the expansion of Indo-European languages. The study highlights the importance of integrating computational phylogenetic methods with lexical data to test archaeological hypotheses about human history.A study by Russell D. Gray and Quentin D. Atkinson uses computational methods from evolutionary biology to analyze linguistic data and supports the Anatolian theory of the origin of the Indo-European language family. The analysis of 87 Indo-European languages with 2,449 lexical items estimated the initial divergence of Indo-European languages between 7,800 and 9,800 years ago, aligning with the Anatolian farming hypothesis. This hypothesis suggests that Indo-European languages spread with the spread of agriculture from Anatolia around 8,000 to 9,500 years ago. The results were robust to various changes in coding procedures, calibration points, and Bayesian analysis. The study addresses the limitations of traditional methods like glottochronology, which rely on the assumption of a constant rate of lexical replacement. Recent advances in computational phylogenetic methods allow for more accurate estimation of divergence times by incorporating Bayesian inference and rate smoothing algorithms. These methods account for variations in evolutionary rates and borrowing between languages, leading to more reliable divergence time estimates. The analysis used a database of 95 Indo-European languages and three extinct languages, with cognate sets coded as binary characters. The results showed a strong tree-like signal in the data, with a consensus tree consistent with traditional Indo-European language groups. The tree also reflected uncertainties in the relationships between major language groups, such as the Albanian group. The study found that the divergence time estimates were consistent with the Anatolian farming theory, suggesting that agriculture played a key role in the spread of Indo-European languages. The results also showed that the initial analysis may have underestimated the age of Indo-European due to the influence of chance similarities and unrecognised borrowings. The study used various methods to account for these biases, including constraint trees and missing data coding. The findings support the Anatolian theory of Indo-European origin, suggesting that the spread of agriculture from Anatolia played a significant role in the expansion of Indo-European languages. The study highlights the importance of integrating computational phylogenetic methods with lexical data to test archaeological hypotheses about human history.