This article adds nuanced findings to the previous generalization that high sonority of the vowel explains its more frequent use in warmer climates. The authors find that “speakers in warm-climate languages make more use of the so-called “sonorant” consonants, that is, consonants with some of the qualities of vowels” (123).

This study examines whether language construction, specifically the number of consonant-vowel syllables, will be related to the environment and literacy of a society. Empirical analysis suggests that consonant-vowel syllables are more common in warmer climates and less common in written languages.

Munroe and Fought attempt to add new perspective to Ember and Ember's (2007) assertion that certain environmental features help to predict mean sonority levels in speech. This article discusses the other possible elements such as word length that might raise the level of communicative efficiency.

This article presents a reanalysis of a previous study on language rhythm and consonant-vowel syllables by Ember and Ember (2000). Communicative efficiency, climate, baby-holding, literacy, and mean number of syllables per word were all considered as factors in consonant-vowel syllable use.

This article examines the relationship between grammatical forms and a society’s economic activity, particularly whether property-based societies are more likely to develop the possessive verbs. Analysis supports an association.

Using a sample of four language families, this paper replicates previous findings on the relationship between consonant-vowel syllable use and climate. An secondary finding on the relationship between consonant-vowel syllable use and writing system was also replicated.

This article examines dream symbols that are classified by gender. Tests of six languages from six branches suggest that objects that appear as male or female dream symbols are represented by corresponding gendered words (i.e. masculine or feminine nouns).

The authors design and implement two tasks requiring linguistic and non-linguistic spatial reference across a linguistically-diverse sample in order to examine the relationship between language and cognition cross-culturally. The results, which indicate large conceptual variation in frame of spatial reference across as well as strong correlation between use of absolute descriptors and absolute cognitive representations within language communities, suggest that language structure may actively shape the systems of spatial representation available to different cultural groups.

This article focuses on environmental and social explainations for variations in sonority. As expected, results suggest that climate, vegetation density, and sexuality are associated with sonority.

How do subsystems of language evolve over time? It is commonly assumed that grammatical changes of language are slower than vocabulary changes. Using a Dirichlet process mixture model to analyze rates of language evolution in 81 Austronesian languages, the authors find that to the contrary, the grammatical features of language tend to change at a faster rate than basic vocabulary. Furthermore, their results show that grammatical features have higher rates of homoplasy, more frequent contact-induced change, and less deliberate differentiation than basic vocabulary.