Preprints (not yet peer-reviewed)

39 downloads
81 views

Background. Adopting expansive versus constrictive postures related to high versus low levels of social power has been suggested to induce changes in testosterone and cortisol levels, and thereby to mimic hormonal correlates of dominance behavior. However, these...

["Anthropology","Anatomy and Physiology","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.27389v1
109 downloads
167 views

Both animal hibernation (heterothermy) and human renal osteodystrophy are characterized by high levels of serum parathyroid hormone. To test the hypothesis of hibernation in an extinct human species, we examined the hominin skeletal collection from Sima de los...

["Anthropology","Paleontology","Anatomy and Physiology","Nephrology","Metabolic Sciences"]
doi:10.7287/peerj.preprints.27370v1
82 downloads
190 views

We argue that classic economic games and their more recent extensions should continue to play a role in fieldworkers’ methodological toolkits. Economic games are not replacements for observational and self-report studies of behavior, but rather complements to them:...

["Anthropology","Evolutionary Studies","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.27355v1
290 downloads
530 views

Primate individuals use a variety of strategies in intergroup encounters, from aggression to tolerance; however, recent focus on the evolution of either warfare or peace has come at the cost of characterizing this variability. We identify evolutionary advantages...

["Animal Behavior","Anthropology","Ecology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.3400v3
248 downloads
541 views

ABSTRACT: The discovery of Paranthropus deyiremeda in 3.3–3.5 million year old fossil sites in Afar, together with 30% of the gorilla genome showing lineage sorting between humans and chimpanzees, and a NUMT (“nuclear mitochondrial DNA segment”) on chromosome 5...

["Anthropology","Evolutionary Studies","Genomics","Paleontology"]
doi:10.7287/peerj.preprints.27163v1
213 downloads
424 views

ABSTRACT: The Gorilla Genome Project (Scally, 2012) showed that 30% of the gorilla genome introgressed into the ancestor of humans and chimpanzees, and that the two species diverged through lineage sorting with 15% ending up in Pan and another 15% in Homo. That...

["Anthropology","Evolutionary Studies","Genomics"]
doi:10.7287/peerj.preprints.27134v5
279 downloads
460 views

The use of personal ornaments by Neandertals is one of the scarce evidence of their symbolic behaviour. Among them stand up the eagle talons used presumably as pendants, in an analogous way than anatomically Modern Humans (Homo sapiens) did. Considering the broad...

["Anthropology","Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.27133v1
132 downloads
350 views

The discovery of Paranthropus deyiremeda in 3.3–3.5 million year old fossil sites in Afar (Haile-Selassie, 2015), together with 30% of the gorilla genome showing lineage sorting between humans and chimpanzees (Scally, 2012), and a NUMT (“nuclear mitochondrial DNA...

["Anthropology","Evolutionary Studies","Genomics"]
doi:10.7287/peerj.preprints.27130v3
96 downloads
181 views

Tertiary dentine forms when an odontoblast is directly affected by stimuli, commonly through occlusal wear. In this study the presence of tertiary dentine is recorded in three South African fossil hominin species (Australopithecus africanus, Homo naledi and Paranthropus...

["Anthropology","Ecology","Evolutionary Studies","Paleontology","Dentistry"]
doi:10.7287/peerj.preprints.27115v1
159 downloads
659 views

Vervet monkeys (Chlorocebus pygerythrus) are one of the most widely distributed non-human primate species found in South Africa. They occur across all the South African provinces, inhabiting a large variety of habitats. These habitats vary sufficiently that it...

["Anthropology","Biodiversity","Biogeography","Genetics"]
doi:10.7287/peerj.preprints.26577v4
554 downloads
2,757 views

Sexual selection favors traits that increase mating and, thus, reproductive success. Some scholars have suggested that intrasexual selection driven by contest competition has shaped human male aggression. If this is the case, one testable hypothesis is that beliefs...

["Animal Behavior","Anthropology","Ecology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.3331v2
1,821 downloads
4,578 views

Almost a decade ago, the sequencing of ancient DNA from archaic humans - Neanderthals and Denisovans - revealed that modern and archaic humans interbred at least twice during the Pleistocene. The field of human paleogenomics has now turned its attention towards...

["Anthropology","Evolutionary Studies","Genetics","Genomics"]
doi:10.7287/peerj.preprints.26782v2
3,295 downloads
5,397 views

Computers are a central tool in the research process, enabling complex and large scale data analysis. As computer-based research has increased in complexity, so have the challenges of ensuring that this research is reproducible. To address this challenge, we review...

["Anthropology","Computational Biology","Science and Medical Education","Computational Science","Data Science"]
doi:10.7287/peerj.preprints.3192v2
130 downloads
186 views

In vertebrates, it has been argued that the development and evolution of an enlarged brain requires an increased basal metabolic rate or a compensatory reduction in the resources devoted to the formation of other metabolically costly tissues, leading to a reduction...

["Anthropology","Developmental Biology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.26543v1
118 downloads
238 views

Digital photographs taken under controlled conditions were used to examine the incidence of linear enamel hypoplasia defects (LEHs) in burials from the Buckeye Knoll archaeological site (41VT98 Victoria county, Texas), which spans the Early to Late Archaic Period...

["Anthropology","Dentistry"]
doi:10.7287/peerj.preprints.3509v1
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