This paper examines the Berlin-Kay color salience theory and offers four correlates of color salience: earliness of introduction, brevity of expression, frequency of use, and frequency of mention in ethnographic literature. All four correlations support the Berlin-Kay theory. The authors suggest that salience may be “an important general principle of cultural evolution” (1107).

The research presented in this book challenges the notion that languages develop color terms independently of other languages. Authors find a universal inventory of eleven basic color categories from which the basic color terms are drawn. Authors also find an apparent fixed sequence of evolutionary stages through which a language must pass as its color vocabulary increases. A postive correlation between cultural complexity and complexity of color vocabulary is observed.

This article examines the variation in color naming and susceptibility to visual illusions cross-culturally. Results suggest a geographic patterning of color naming and illusion susceptibility which parallels the distribution of eye pigmentation.

Different languages contain different numbers of basic colors. One interpretation is that more complex societies will have more basic color terms. Another interpretation is that peoples with less pigmented eyes will have more basic color terms. This paper suggests that both interpretations are necessary in order to predict the number of basic color terms.

Using ethnography, historical linguistics, paleoanthropology, and speech biomechanics, the present study examines the relationship between labiodentals and the post-Neolithic period with the introduction of agriculture and softer diets. The results offer support for the linguist, Charles Hockett's, hypothesis that the shift in bite configuration in the post-Neolithic period, as well as the persistence of overbite and overjet, facilitates and makes the articulation of labiodentals more prevalent. Using cross-cultural comparison, findings also reveal that societies that produce their food are more likely to evolve and keep labiodentals than those that are not food-producing. Contact with other societies is also a mode by which societies gain labiodentals. Lastly, the expansion of agricultural and food processing technology over time has been imperative to labiodental articulations.

Researchers looked at the meaning of various emotion concepts, 'emotion semantics' in an attempt to determine the patterns and processes behind meaning cross-culturally. They used maps of colexification patterns (where semantically related concepts are named with the same word), adjusted Rand indices (ARIs) which indicated the similarities of two community's network structures, and various psychophysiological dimensions to test relationships and patterns of variability /structure in emotion semantics. These methods shed light on the underlying mechanisms behind emotions, both their words and their meanings in languages across the world. Their findings show substantial difference in language families and relationships between geographic proximity of language families and subsequent variation in emotion colexification tied to an evolutionary relationship, while also finding cultural universals in emotion colexification networks with languages primarily differentiating emotions on the basis of valence and activation.

Previous research has found that words are replaced faster in language vocabularies the less the word is used, whereas words that are used more frequently endure longer. Drawing from this theory, the authors of this article propose two questions: 1) Is the rate of replacement for Indo-European kinship terms correlated with their usage frequency? 2) How does this relationship differ between kinship terms and core vocabulary? Using phylogenetic comparative methods to analyze 10 kinship categories from 47 Indo-European languages, the authors find that more frequently used kinship terms tend to be replaced at a much slower rate than less frequently used words. Furthermore, this relationship between word replacement rate and usage frequency is stronger for kinship terms than it is for core vocabulary terms.

The second and third parts of this book classify the economic systems of foraging and agricultural societies in the SCCS based on correlations between their institutions of property an distribution. These economic types are then examined for relationships with other social, political, demographic, and environmental factors in order to draw tentative conclusions regarding the origins of the Agricultural and Industrial Revolutions. The fourth part of the book uses cross-national data to examine similar associations in industrial/service economies, and is not included here.

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 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.