Diachronica - Volume 38, Issue 2, 2021

Attempts to classify Tupí-Guaraní languages have so far been inconsistent with archaeological evidence and ignored information from historical sources. The case of Tupinambá is most illustrative in this regard. Using both Bayesian phylogenetic analysis and a stochastic algorithm that reconstructs phylogenetic trees by relying on maximum likelihood estimation, we suggest a new internal classification of the Tupí-Guaraní branch. The results of the analyses are in accordance with the most recent genetic research on Tupían populations and challenge previous classifications by suggesting, among others, that Tupinambá should not be considered a ‘Guaraní’ language.

This paper discusses word order change in Medieval French. Verb-second (V2) configurations are generally understood as having an initial XP and the verb in the left periphery. How has this configuration been lost in French? Under an Information Structure scenario, the XP is in initial position because of its characterized (discourse-old) informational value, which motivates the left-peripheral position of the verb. The decline of the characterized informational value of the XP thus accounts for the gradual loss of V2. The informational behaviour of XPs was examined in unambiguous V2 configurations with an overt post-verbal subject in Medieval French. This detailed quantitative study of a calibrated corpus shows that XPs with a characterized informational value were predominant with productive V2 configurations, that they gradually declined as productive V2 was lost, and that they increasingly failed to attract the verb to the left periphery. These observations can be accounted for if V2 in Medieval French was driven by informational values and if it disappeared along with the informational cues provided by the XPs.

Phylogenetic methods have broad potential in linguistics beyond tree inference. Here, we show how a phylogenetic approach opens the possibility of gaining historical insights from entirely new kinds of linguistic data – in this instance, statistical phonotactics. We extract phonotactic data from 112 Pama-Nyungan vocabularies and apply tests for phylogenetic signal, quantifying the degree to which the data reflect phylogenetic history. We test three datasets: (1) binary variables recording the presence or absence of biphones (two-segment sequences) in a lexicon (2) frequencies of transitions between segments, and (3) frequencies of transitions between natural sound classes. Australian languages have been characterized as having a high degree of phonotactic homogeneity. Nevertheless, we detect phylogenetic signal in all datasets. Phylogenetic signal is greater in finer-grained frequency data than in binary data, and greatest in natural-class-based data. These results demonstrate the viability of employing a new source of readily extractable data in historical and comparative linguistics.

This article investigates word order changes in negated periphrastic constructions in the history of Basque. A number of linguistic variables are argued to correlate with these changes: the negative particle ez is increasingly focalized in main clauses, the innovative pattern negative particle – auxiliary verb – main verb allows for more syntactic flexibility than the conservative one, and the word order changes do not progress at equal rates in all clause subtypes. Genre issues are also considered, including the hypothesis that the loss of the conservative order main verb – negative particle – auxiliary verb of main clauses occurs first in texts close to oral language. Moreover, it is argued that eastern dialects are more innovative than western dialects and that efforts towards standardization of the language have slowed down this case of word order change.