Peer-reviewed Articles

97 downloads
665 views

Background Premastication, the transfer of pre-chewed food, is a common infant and young child feeding practice among the Tsimane, forager-horticulturalists living in the Bolivian Amazon. Research conducted primarily with Western populations has shown that infants...

["Anthropology","Microbiology"]
doi:10.7717/peerj.2660
98 downloads
588 views

Altruism toward strangers is considered a defining feature of humans. However, manifestation of this behaviour is contingent on the costliness of the selfless act. The extent of altruistic tendencies also varies cross-culturally, being more common in societies...

["Animal Behavior","Anthropology"]
doi:10.7717/peerj.2610
251 downloads
876 views

Psychoactive plants contain chemicals that presumably evolved as allelochemicals but target certain neuronal receptors when consumed by humans, altering perception, emotion and cognition. These plants have been used since ancient times as medicines and in the context...

["Anthropology","Biodiversity","Evolutionary Studies","Neuroscience","Plant Science"]
doi:10.7717/peerj.2546
78 downloads
500 views

When exposed to enhanced background noise, humans avoid signal masking by increasing the amplitude of the voice, a phenomenon termed the Lombard effect. This auditory feedback-mediated voice control has also been found in monkeys, bats, cetaceans, fish and some...

["Animal Behavior","Anthropology","Evolutionary Studies"]
doi:10.7717/peerj.2328
340 downloads
1,620 views

The evolution of the modern human (Homo sapiens) cranium is characterized by a reduction in the size of the feeding system, including reductions in the size of the facial skeleton, postcanine teeth, and the muscles involved in biting and chewing. The conventional...

["Anthropology","Computational Biology","Evolutionary Studies","Anatomy and Physiology"]
doi:10.7717/peerj.2242
308 downloads
3,586 views

Haasgat is a primate-rich fossil locality in the northeastern part of the Fossil Hominid Sites of South Africa UNESCO World Heritage Site. Here we report the first hominin identified from Haasgat, a partial maxillary molar (HGT 500), that was recovered from an...

["Anthropology","Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.2024
126 downloads
686 views

The phylogenetic position of many fossil platyrrhines with respect to extant ones is not yet clear. Two main hypotheses have been proposed: the layered or successive radiations hypothesis suggests that Patagonian fossils are Middle Miocene stem platyrrhines lacking...

["Anthropology","Biodiversity","Evolutionary Studies","Zoology"]
doi:10.7717/peerj.1967
249 downloads
898 views

Indigenous beers (chicha) are part of the indigenous culture in Ecuador. The fermentation process of these beers probably relies on microorganisms from fermented substrates, environment and human microbiota. We analyzed the microbiota of artisanal beers (including...

["Anthropology","Food Science and Technology","Microbiology","Infectious Diseases"]
doi:10.7717/peerj.1962
235 downloads
1,215 views

The Drimolen Palaeocave System Main Quarry deposits (DMQ) are some of the most prolific hominin and primate-bearing deposits in the Fossil Hominids of South Africa UNESCO World Heritage Site. Discovered in the 1990s, excavations into the DMQ have yielded a demographically...

["Anthropology","Paleontology"]
doi:10.7717/peerj.1941
206 downloads
736 views

Background. In recent years, researchers have investigated the relationship between facial width-to-height ratio (FWHR) and a variety of threat and dominance behaviours. The majority of methods involved measuring FWHR from 2D photographs of faces. However, individuals...

["Anthropology","Psychiatry and Psychology","Human-Computer Interaction"]
doi:10.7717/peerj.1801
1 citation
169 downloads
748 views

The coastal environments of South Africa’s Cape Floristic Region (CFR) provide some of the earliest and most abundant evidence for the emergence of cognitively modern humans. In particular, the south coast of the CFR provided a uniquely diverse resource base for...

["Anthropology","Ecology","Evolutionary studies"]
doi:10.7717/peerj.1679
1 citation
599 downloads
2,237 views

Upright walking absent a bent-hip-bent-knee gait requires lumbar lordosis, a ubiquitous feature in all hominids for which it can be observed. Its first appearance is therefore a central problem in human evolution. Atelids, which use the tail during suspension,...

["Anthropology","Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.1521
2 citations
186 downloads
821 views

Using a model organism (rabbits) that resembles a number of mammalian herbivores in key aspects of its chewing behaviors, we examined how variation in dietary mechanical properties affects food breakdown during mastication. Such data have implications for understanding...

["Anthropology","Evolutionary Studies","Paleontology","Zoology","Anatomy and Physiology"]
doi:10.7717/peerj.1345
1 citation
311 downloads
1,023 views

Human hands, when compared to that of apes, have a series of adaptations to facilitate manipulation. Numerous studies have shown that Australopithecus afarensis and Au. africanus display some of these adaptations, such as a longer thumb relative to the other fingers,...

["Anthropology","Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.1311
1 citation
154 downloads
986 views

Dopamine is a major neurotransmitter in the human brain and is associated with various diseases. Schizophrenia, for example, is treated by blocking the dopamine receptors type 2. Shaner, Miller & Mintz (2004) stated that schizophrenia was the low fitness variant...

["Anthropology","Bioinformatics","Evolutionary Studies","Genetics"]
doi:10.7717/peerj.1149

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