Diet in the Iron Age cemetery population at Wetwang Slack, East Yorkshire, UK: carbon and nitrogen stable isotope evidence

This paper reports d13C and d15N values for human and animal bone collagen from the middle Iron Age site at Wetwang Slack, East Yorkshire, UK. The data indicate a human diet which was high in animal protein, with no evidence for any significant marine food input. No differences were found between high-status vehicle (or 'chariot') burials and the rest of the population and no other status differentiations are visible according to burial rite, age or sex groupings, although the data obtained for the older males display an unusual trend. No dietary variation is seen between two site phases and no evidence for an early immigrant group is present. The range of isotope values for the adult human group as a whole is small, indicating that the diet is likely to have been consistent over time and across the population, although two individuals stand out as unusual amongst the 62 analysed

British Iron Age Diet: stable isotopes and other evidence

This paper presents the results of new research into British Iron Age diet. Specifically, it summarizes the existing evidence and compares this with new evidence obtained from stable isotope analysis. The isotope data come from both humans and animals from ten British middle Iron Age sites, from four locations in East Yorkshire, East Lothian, Hampshire and Cornwall. These represent the only significant data-set of comparative humans (n = 140) and animals (n = 212) for this period currently available for the UK. They are discussed here alongside other evidence for diet during the middle Iron Age in Britain. In particular, the question of whether fish, or other aquatic foods, were a major dietary resource during this period is examined. The isotopic data suggest similar dietary protein consumption patterns across the groups, both within local populations and between them, although outliers do exist which may indicate mobile individuals moving into the sites. The diet generally includes a high level of animal protein, with little indication of the use of marine resources at any isotopically distinguishable level, even when the sites are located directly on the coast. The nitrogen isotopic values also indicate absolute variation across these locations which is indicative of environmental background differences rather than differential consumption patterns and this is discussed in the context of the difficulty of interpreting isotopic data without a complete understanding of the 'baseline' values for any particular time and place. This reinforces the need for significant numbers of contemporaneous animals to be analysed from the same locations when interpreting human data-sets

Bone stable isotope evidence for infant feeding in Mediaeval England

This paper is a first study of duration of breastfeeding using bone stable isotopes in infants in a British palaeopopulation, from the deserted Mediaeval village of Wharram Percy, England. Nitrogen stable isotope analysis suggests cessation of breastfeeding between 1 and 2 years of age. Comparison with Mediaeval documentary sources suggests that recommendations of physicians regarding infant feeding may have influenced common practice in this period

Mesolithic and Neolithic Subsistence in Denmark: new stable isotope data

The change in subsistence at the Mesolithic/Neolithic transition in Denmark is often characterized as rapid, with a dramatic shift from a marine diet in the Mesolithic to a terrestrial-based diet in the Neolithic. This view has been largely based on the work of Tauber (1981), who observed this dietary shift in stable carbon isotope values for human bone from various coastal sites. Crucial to Tauber's argument are the radiocarbon dates he obtained for each of the isotope samples, for the ages are used to categorize samples as Mesolithic or Neolithic. In this reassessment of his pioneering work, we report on new carbon and nitrogen stable isotope values and radiocarbon dates for Danish Mesolithic and Neolithic humans, including some obtained by remeasuring a number of Tauber's samples. We first briefly describe the Late Mesolithic and Early Neolithic in Denmark and the major characteristics of the transition. We next consider the work by Tauber that has been seminal in studies of the transition. In subsequent sections we present new radiocarbon dates and stable isotope measurements from human skeletal material from the Mesolithic and Neolithic. The concluding discussion summarizes our results and emphasizes the need for more analyses of radio- and stable isotopes from this important transition period

Palaeodiets of Humans and Fauna at the Spanish Mesolithic Site of El Collado

The first human stable isotope results from the Spanish Levant, from the Mesolithic (ca. 7500 BP, Mesolithic IIIA phase) site of El Collado (near Oliva, Valencia) provide evidence for the consumption of marine protein by humans, estimated at approximately 25% of the dietary protein for some individuals. Isotopic analysis of human remains from other coastal Mesolithic sites in Europe, particularly along the Atlantic coast, also shows significant consumption of marine foods, but the amount of marine food consumed by the El Collado humans was much less than at those sites. This may be because of a different dietary adaptation or because the Mediterranean is much less productive than the Atlantic

The Gravettian burial known as the Prince (‘Il Principe’): new evidence for his age and diet

The famous upper Palaeolithic (Gravettian) burial with shell ornaments known as "Il Principe" was discovered in Italy sixty years ago. Here the authors present recent scientific research on his skeleton, leading to new assessments of the date of the burial and indications of diet

First light for avian embryos: eggshell thickness and pigmentation mediate variation in development and UV exposure in wild bird eggs

Article first published online: 29 JUL 20141. The avian embryo's development is influenced by both the amount and the wavelength of the light that passes through the eggshell. Commercial poultry breeders use light of specific wavelengths to accelerate embryonic growth, yet the effects of the variably patterned eggshells of wild bird species on light transmission and embryonic development remain largely unexplored. 2. Here, we provide the first comparative phylogenetic analysis of light transmission, through a diverse range of bird eggshells (74 British breeding species), in relation to the eggshell's thickness, permeability, pigment concentration and surface reflectance spectrum (colour). 3. The percentage of light transmitted through the eggshell was measured in the spectral range 250–700 nm. Our quantitative analyses confirm anecdotal reports that eggshells filter the light of the externally coloured shell. Specifically, we detected a positive relationship between surface eggshell reflectance (‘brightness’) and the percentage of light transmitted through the eggshell, and this relationship was strongest at wavelengths in the human-visible blue-green region of the spectra (c. 435 nm). 4. We show that less light passes through thicker eggshells with greater total pigment concentrations. By contrast, permeability (measured as water vapour conductance) did not covary significantly with light transmission. Eggs of closed-nesting species let more light pass through, compared with open nesters. 5. We postulate that greater light transmission is required to assist embryonic development under low light exposure. Importantly, this result provides an ecological explanation for the repeated evolution of immaculate, white- or pale-coloured eggshells in species nesting in enclosed spaces. 6. Finally, we detected correlative support for the solar radiation hypothesis, in that eggshells of bird species with a longer incubation period let significantly less of the potentially harmful, ultraviolet (UV) light pass through the eggshell. In summary, we demonstrate suites of avian eggshell properties, including eggshell structure and pigmentation, which are consistent with an evolutionary pressure to both enhance and protect embryonic development.Golo Maurer, Steven J. Portugal, Mark E. Hauber, Ivan Mikšík, Douglas G. D. Russell and Phillip Casse

Brand Logo Recognition by Children Aged 3 to 6 Years: Mickey Mouse and Old Joe the Camel

Objective.—Little is known about the influence of advertising on very young children. We, therefore, measured product logo recognition by subjects aged 3 to 6 years. Design.—Children were instructed to match logos with one of 12 products pictured on a game board. Twenty-two logos were tested, including those representing children’s products, adult products, and those for two popular cigarette brands (Camel and Marlboro). Setting.—Preschools in Augusta and Atlanta, Ga. Participants.—A convenience sample of 229 children attending preschool. Results.—The children demonstrated high rates of logo recognition. When analyzed by product category, the level of recognition of cigarette logos was intermediate between children’s and adult products. The recognition rates of The Disney Channel logo and Old Joe (the cartoon character promoting Camel cigarettes) were highest in their respective product categories. Recognition rates increased with age. Approximately 30% of 3-year-old children correctly matched Old Joe with a picture of a cigarette compared with 91.3% of 6-year-old children. Conclusion.—Very young children see, understand, and remember advertising. Given the serious health consequences of smoking, the exposure of children to environmental tobacco advertising may represent an important health risk and should be studied further

COGNITIVE THEORY OF CATEGORIZATION, AS EXEMPLIFIED ON JAPANESE MATERIAL

Nakon uvodnog utvrđivanja teorijske razlike između tradicionalnog aristotelovskog i suvremenog kognitivnog poimanja procesa ljudske kategorizacije, te navođenja prednosti kognitivnog pristupa, autor u ovome radu na primjerima iz japanskoga jezika oprimjeruje mentalne procese prisutne u oblikovanju konceptualnih kategorija koje su preslikane na jezični materijal. Na primjerima se japanskih brojača objašnjavaju procesi koji uključuju konceptualnu metaforu i metonimiju, konvencionalne mentalne slike, transformaciju slike u shemu (shematizacija), višestruko temeljenu motivaciju te pojavu lančanog vezivanja (značenjski lanci). Također se primjerom konceptualne kategorije ja u japanskome jeziku prikazuje sposobnost utjecaja društva i kulture da nametnu značenjski okvir unutar kojega će se određena kategorija upotrebljavati.After an introduction to theoretical distinctions between traditional Aristotelian and contemporary cognitive approach to the process of human categorization, and a demonstration of the advantages of the cognitive approach, the paper goes on to discuss Japanese data which exemplify mental processes underlying the formation of conceptual categories and their mapping onto linguistic structures. Japanese classifiers are discussed in the context of cognitive phenomena such as conceptual metaphor and metonymy, conventional mental images, imageschema transformation, multiple motivation, and the phenomenon of chaining structures. The final section discusses the conceptual category self in Japanese, specifically the ability of society and culture to impose a meaning frame within which a given category will be used