Thesis (Ph.D.)--Indiana University, Dept. of Psychological Brain Sciences, 2009. / Title from PDF t.p. (viewed on Feb. 10, 2010). Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3770. Adviser: William Timberlake.

<p> Signaling theory originated in evolutionary biology and explains the mechanisms behind the honest communication of information between organisms. Communication scholars are increasingly turning to signaling theory as a way to test evolutionary explanations for human behavior. The present study tests if receiver-dependent costly signals can be used to predict the moment of aggressive behavior in video game environments. High status (but not high trait aggression) male subjects were fastest to engage in combat against a low voice pitch male opponent - but only when subject skill was high. This result underscores the importance of video game skill as a variable of interest as well as the need for video games researchers to tease out when real-world behaviors map to video game contexts.</p>

Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2007. / Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5788. Adviser: G. Troy Smith. Title from dissertation home page (viewed May 8, 2008).

Thesis (Ph.D.)--University of California, San Francisco, 2008. / Source: Dissertation Abstracts International, Volume: 69-09, Section: B, page: 5241. Adviser: Allison J. Doupe.

<p> Previous studies find prenatal stress to relate to negative health in mothers and their children. Health behaviors such as exercise, proper nutrition, and relaxation have been found to reduce stress in non-pregnant populations, yet few studies have investigated the effect of these behaviors on prenatal stress. The current study examined the impact of exercise, nutrition, and relaxation on perceived stress, anxiety, and cortisol reactivity to a stress task in pregnant women. We hypothesized that women who exercised, had better eating habits, and engaged in relaxation would have reduced perceived stress, anxiety and more adaptive cortisol responses. Our results suggest an adaptive effect of exercise, and maladaptive effect of fat consumption on prenatal cortisol responses, but no association between health behaviors and perceived stress or anxiety. These findings contribute to our understanding of the relationship between health behaviors and stress during pregnancy, and may be useful for prenatal health interventions.</p>

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Made available in DSpace on 2016-06-02T20:12:19Z (GMT). No. of bitstreams: 1 5530.pdf: 1007801 bytes, checksum: ecc04a9dd9319dc506c10f3c75db858b (MD5) Previous issue date: 2010-09-03 / The current paperwork intends to analyze the concept of drive in both first and second theories of drives according to the Freudian psychoanalysis and refers to the behavioral biology in order to initiate a debate about the Trieb concept between these two areas of knowledge. According to Sigmund Freud, the concept of drive is the most important one and also the most obscure for the metapsychology. The complications regarding the meaning of this concept begin with translation problems and with divergences among several schools of psychoanalysis, which postulate different comprehensions referring to the word Trieb and Instinkt and referring to the way Freud used them in his texts to talk about the development of the psychic apparatus and its place in the construction of metapsychology. The view on the Instinkt drive being a totally inherited and automatic behavior is a misunderstanding for the own scientists in the area of behavioral biology. Freud uses in his texts the concepts of Trieb and Instinkt in turns and this research tries to elucidate if there was the need of this distinction and, thus, an emphasis is given on the definitions that Freud has postulated about the nature of both, sexual drive and death drive. Besides, the beginning of a dialogue between these Freudian concepts and the sexual drive and the drive of aggressiveness in the sociobiology of Edward O. Wilson and in the behavioral biology of Konrad Lorenz is carried out. / O presente trabalho pretende analisar o conceito de pulsão na psicanálise freudiana, da primeira e da segunda teoria das pulsões, e recorrer à biologia do comportamento para iniciar um debate sobre o conceito de Trieb entre essas duas áreas do conhecimento. Segundo Sigmund Freud o conceito de pulsão é o mais importante e também o mais obscuro para a metapsicologia. As complicações quanto ao significado desse conceito começam por problemas de tradução e por divergências entre várias escolas de psicanálise que postulam compreensões diferentes quanto à palavra Trieb e Instinkt e quanto ao modo como Freud as utilizava em seus textos para referir-se ao desenvolvimento do aparelho psíquico e os seus lugares na construção da metapsicologia. O instinto é um conceito polêmico para os próprios cientistas da área da biologia do comportamento. Freud utiliza alternadamente os conceitos de Trieb ou Instinkt em seus textos e essa pesquisa procura elucidar se haveria a necessidade dessa distinção e, para tanto, é dada ênfase às definições que Freud postulou sobre a natureza da pulsão sexual e da pulsão de morte, como também é realizado o início de um diálogo entre esses conceitos freudianos e o conceito de instinto sexual e instinto de agressão na sociobiologia de Edward O. Wilson e na biologia do comportamento de Konrad Lorenz.