Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Entire DC Network
The Ontogeny Of Complex Tool Use Among Chimpanzees Of The Goualougo Triangle, Republic Of Congo, Stephanie L. Musgrave
The Ontogeny Of Complex Tool Use Among Chimpanzees Of The Goualougo Triangle, Republic Of Congo, Stephanie L. Musgrave
Arts & Sciences Electronic Theses and Dissertations
Various factors are hypothesized to have contributed to the flourishing of technology during human evolution, including high-fidelity social learning, a propensity for prosocial helping, and sex differences in foraging tool use. In this research, we examined the role of these factors on the development of complex tool-using skills among wild chimpanzees (Pan troglodytes troglodytes) in the Goualougo Triangle, Republic of Congo. These apes exhibit among the most complex tool behaviors of any nonhuman animal, including the flexible use of multiple tool types and the manufacture of tools from specific raw materials, according to a particular design. Specifically, we drew upon …
Typical And Atypical Development Of The Brain’S Functional Network Architecture, Ashley Nicole Nielsen
Typical And Atypical Development Of The Brain’S Functional Network Architecture, Ashley Nicole Nielsen
Arts & Sciences Electronic Theses and Dissertations
The human brain is a complex organ that gives rise to many behaviors. Specialized neural regions cooperate as functional networks that form an intricate functional architecture. Development provides a unique window into how brain functioning and human thinking are affected if the necessary neural features and connections are not fully formed. Similarly, developmental disorders can shed light on atypical trajectories of neural systems that may lead to or be a consequence of symptomatic behavior. A description of the typical and atypical development of functional networks is essential to identify the features of brain organization critical for mature human thinking and …
Exploring Infant Leukemia Through Exome Sequencing And An In Vitro Model Of Hematopoietic Development, Mark Cannon Valentine
Exploring Infant Leukemia Through Exome Sequencing And An In Vitro Model Of Hematopoietic Development, Mark Cannon Valentine
Arts & Sciences Electronic Theses and Dissertations
Cancer is a heterogeneous disease with myriad causes and outcomes. Many of the cancers that occur in adult populations have become increasingly well characterized with the advent of affordable high-throughput sequencing. These studies have revealed that cancer is largely a disease of somatic mutation in the adult population. In strong contrast to this, childhood cancers have an exceedingly low rate of somatic mutation. At the extreme end of this spectrum is Infant Leukemia (IL). Sequencing of IL has revealed that these tumors frequently have one or fewer somatic SNP. In the absence of a somatic explanation for IL, many other …
Selection Or Socialization? A Propensity Score Matched Study Of Personality And Life Events, Emorie Beck
Selection Or Socialization? A Propensity Score Matched Study Of Personality And Life Events, Emorie Beck
Arts & Sciences Electronic Theses and Dissertations
Across the lifespan, personality changes in normative ways, but the source of such change remains ambiguous. Life events may be one impetus of such change, but strong selection effects into such events makes it unclear whether such change is driven by already existing differences (selection) between people or socialization following life events. In a preregistered study, we test socialization and selection effects of the Big 5 and life events using a large (N = 19,627) representative sample of Germans and 12 life events (e.g. marriage, retirement) from the GSOEP. Using propensity score matching and Bayesian multilevel growth curve models, we …