The Peacock Fallacy: Art as a Veblenian Signal

The fact that world-over people seem inexplicably motivated to allocate time and effort to apparently useless cultural practices, like the arts, has led several evolutionary scholars to suggest that these might be costly Zahavian signals correlated with genetic fitness, such as the infamous peacock’s tail. In this paper, I review the fundamental arguments of the hypothesis that art evolved and serves as a costly Zahavian signal. First, I look into the hypothesis that humans exert mate choice for indirect benefits and argue that the data supports mate choice for direct benefits instead. Second, I argue that art practice may well be a costly signal, however not necessarily related to good genes. Third, I suggest that Thorstein Veblen’s original concept of conspicuous signals as social tools to obtain and convey prestige provides a better account than the Zahavian model for the evolution and function of art in society. As a Veblenian signal, art could still have many of the effects suggested for visual art as a Zahavian signal, except not for the indirect benefits of optimal offspring, but for the direct benefits of acquiring and conveying social status.publishedVersio

Predoctoral Dental Student Evaluation of American Academy of Pediatric Dentistry’s Caries‐Risk Assessment Tool

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153756/1/jddj002203372006703tb04085x.pd

Targeting of the Year One dental visit for United States children

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75098/1/j.1365-263X.2003.04602.x.pd

Child Abuse and Neglect: Dental and Dental Hygiene Students’ Educational Experiences and Knowledge

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153595/1/jddj002203372006705tb04111x.pd

Art in the Making: The evolutionary origins of visual art as a communication signal

The corpus of art from the Pleistocene has grown substantially in recent decades, and with it, the earliest evidence of visual art has become much older than previously anticipated, going back over 100,000 years. This new information has rendered some traditional ideas about the recent origins of visual art obsolete. Existing archaeological and evolutionary models that aim to explain the emergence of visual art should now be reassessed in light of current data. That is the aim of this book. First, it reviews the earliest examples of different forms of visual art in two important archaeological periods of human artistic innovation, the height of the African Middle Stone Age, and the European Early Upper Palaeolithic. It then takes a critical view at three influential origins-of-art models, namely, the sexual selection model, the social cohesion model, and the cognitive evolution model. Finally, it offers an alternative proposal that redefines visual art as a communication signal and, using the archaeological evidence, relates its emergence and development to the evolution of human cooperation strategies. This book will appeal to anyone interested in the debate of the origins of art and the evolution of modern human cognition, behaviour, and culture.Modern and Contemporary Studie

The assembly of yeast mitochondrial ATP synthase: subunit depletion in vivo suggests ordered assembly of the stalk subunits b, OSCP and d

AbstractThe abundance in vivo of each of three subunits b, OSCP and d, components of the stalk region of the yeast mitochondrial ATP synthase complex, was manipulated by a controlled depletion strategy. Western blots of whole cell lysates were used to study the effect of depletion of each of these subunits on the cellular levels of other subunits of the enzyme complex. A hierarchy of subunit stability was determined and interpreted to indicate the order of assembly of these three subunits of the stalk region. Thus, subunit b is assembled first, followed by OSCP and then by subunit d

The Virtual Child: Evaluation of an Internet‐Based Pediatric Behavior Management Simulation

This article describes an Internet‐based instructional tool designed to give predoctoral dental students a virtual simulation of clinical pediatric dentistry to develop their pediatric behavior management knowledge. Effectiveness of this tool was evaluated using two consecutive classes of junior dental students. The control group was exposed to the traditional behavior management curriculum (two lectures) in a spring term course. The next class of dental students was exposed to the two lectures and, in addition, completed the behavior management simulation during the following spring term. Both groups completed a two‐part examination (objective section=18 questions; open‐ended section=responses to a clinical situation) designed to test their behavior management knowledge. The simulation group performed significantly better in both parts of the examination (objective section: p=.028; open‐ended section: p=.012). The simulation was evaluated by students and perceived by most to be an effective addition to the curriculum. It was concluded that the experimental behavior management simulation, when added to the traditional lecture curriculum, improved pediatric behavior management knowledge in predoctoral dental students.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153691/1/jddj002203372007719tb04383x.pd

Visual Attention Bias for Self-Made Artworks

Action Contro

HcRed, a Genetically Encoded Fluorescent Binary Cross-Linking Agent for Cross-Linking of Mitochondrial ATP Synthase in Saccharomyces cerevisiae

Genetically encoded fluorescent cross-linking agents represent powerful tools useful both for visualising and modulating protein interactions in living cells. The far-red fluorescent protein HcRed, which is fluorescent only in a dimer form, can be used to promote the homo-dimerisation of target proteins, and thereby yield useful information about biological processes. We have in yeast cells expressed HcRed fused to a subunit of mitochondrial ATP synthase (mtATPase). This resulted in cross-linking of the large multi-subunit mtATPase complex within the inner-membrane of the mitochondrion. Fluorescence microscopy revealed aberrant mitochondrial morphology, and mtATPase complexes isolated from mitochondria were recovered as fluorescent dimers under conditions where complexes from control mitochondria were recovered as monomers. When viewed by electron microscopy normal cristae were absent from mitochondria in cells in which mATPase complexes were cross-linked. mtATPase dimers are believed to be the building blocks that are assembled into supramolecular mtATPase ribbons that promote the formation of mitochondrial cristae. We propose that HcRed cross-links mATPase complexes in the mitochondrial membrane hindering the normal assembly/disassembly of the supramolecular forms of mtATPase