Made available in DSpace on 2014-12-17T15:37:04Z (GMT). No. of bitstreams: 1 Phellipe_DISSERT.pdf: 4218890 bytes, checksum: 964dfbc842fd211a3c7595fba2a881b8 (MD5) Previous issue date: 2011-06-17 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The basis of sociability in humans is based on cooperation. The relationship of friendship is vital to the social, emotional and cognitive development of an individual and can be understood as a consequence of selection for reciprocal altruism in humans. The period of adulthood is considered very suitable and appropriate for the investigation of the relations of friendship, but the Brazilian literature on friendship in adults is still nascent. Therefore, the objective was to characterize the relationship of friendship among college students. The study gathered 500 students from higher education institutions in the city of Natal-RN, Brazil, and 250 women (average age 24.1 ? 7.66 years) and 250 men (mean age 26.77 ? 9.64 years). Two questionnaires anonymously and individual were applied: a sociodemographic questionnaire and the other with the desired characteristics in idealized friends. Study 1 assessed the degree of importance of characteristics in the process of choosing a friend of the same sex and opposite sex of the participant. Study 2 investigated the relationship between patterns of idealization of friends and self-assessment of participants. Overall, were the preferred characteristics "Companionship" and "Sincerity" to idealized friends. We also found the influence of sex on the characteristics attributed to an female ideal friend, with emphasis on men for "Beauty/Good looks" and "Intelligence" and women to "Companionship" and "Sincerity". Finally, we observed a positive correlation between participants' self-assessment and preferences for the characteristics of the friends devised. This study revealed important elements for understanding the relationship of friendship, specifically the process of choosing friends. The results reinforce the importance of studying the relationship of friendship to a better understanding of human social behavior. / A base da sociabilidade na esp?cie humana ? fundamentada na coopera??o. A rela??o de amizade, fundamental para o desenvolvimento social, emocional e cognitivo de um indiv?duo, pode ser compreendida como consequ?ncia da sele??o para altru?smo rec?proco em humanos. O per?odo da adultez ? considerado muito prop?cio e adequado para a investiga??o das rela??es de amizade, por?m a literatura brasileira sobre amizade em adultos ainda ? incipiente. Diante disso, o objetivo deste trabalho foi caracterizar a rela??o de amizade em estudantes universit?rios. Participaram desta pesquisa 500 estudantes de institui??es de ensino superior do munic?pio de Natal-RN, Brasil, sendo 250 mulheres (idade m?dia 24,1?7,66 anos) e 250 homens (idade m?dia 26,77?9,64 anos). Dois question?rios de car?ter an?nimo e individual foram aplicados: um question?rio sociodemogr?fico e outro com caracter?sticas desejadas em amigos idealizados. No Estudo 1 avaliamos o grau de import?ncia de caracter?sticas no processo de escolha de um amigo do mesmo sexo e do sexo oposto ao do participante. No estudo 2 investigamos a rela??o entre os padr?es de idealiza??o de amigos(as) e a autoavalia??o dos participantes. De maneira geral, houve prefer?ncia pelas caracter?sticas Companheirismo e Sinceridade para amigos idealizados. Foi poss?vel tamb?m constatar a influ?ncia do sexo sobre as caracter?sticas atribu?das para uma amiga ideal, com ?nfase masculina para Beleza/Boa apar?ncia e Intelig?ncia , e feminina para Companheirismo e Sinceridade . Por fim, observou-se uma correla??o positiva entre a autoavalia??o dos participantes e as prefer?ncias para as caracter?sticas nos amigos(as) idealizados. Este trabalho revelou elementos importantes para a compreens?o da rela??o de amizades, mais especificamente do processo de escolha de amigos. Os resultados encontrados refor?am a relev?ncia do estudo da rela??o de amizade para uma melhor compreens?o do comportamento social humano.

The proposed thesis is comprised of eleven papers connected by the employment of the evolutionary psychological approach in research on various aspects of human sexuality. The aim of the first monothematic part is to demonstrate the evolutionary-psychological approach to one recent phenomenon in female sexuality - the use of oral contraceptives (OC). OC use has been shown to suppress psychological mechanisms that are considered to be adaptive in the fertile period of the natural menstrual cycle. In particular, OC users' ratings of male stimuli that provide the cues of genetic quality and compatibility are lower in comparison with normally cycling women. Moreover, the increase in sexual desire and in the prevalence of proceptive behaviour observed during mid-cycle in normally cycling women is diminished. However, the impact of this phenomenon on mate-choice and relationship dynamics in an ecological context has not been studied. In the first study, we have analyzed the data of Czech women obtained via representative sampling within the Czech National Survey of Sexual Behavior. Results indicated that normally cycling women had a significantly higher number of one-night stands during the last year in comparison to OC users even when living in a long-term relationship. OC usage was also shown to have...

The present study identifies processes contributing to variability in antisocial and prosocial behaviors in early adolescence. More specifically, we considered how perceived feedback from adults (i.e., adult praise) and peers (i.e., coolness) might account for some of the established associations between peer involvement in prosocial behaviors and an individual's engagement in prosocial and antisocial behaviors in the school context. Both adult praise and peer prosocial behavior are tested as predictors of school engagement and antisocial behavior in schools, with perceived feedback from peers (i.e., coolness) examined as both a mediator and moderator using multilevel analysis (MLM) in a statewide sub-sample (N=6,525) of 8th grade Middle School/Junior High students located in Southwestern United States. Results testing mediation indicate a significantly positive association between reports of peer prosocial behavior and individual's own involvement in prosocial behaviors, and a significantly inverse association between reports of peer prosocial behavior and individual's own antisocial behaviors. Perceived feedback from peers (i.e., coolness) only partially accounted for these associations. Conversely, results testing moderation indicated a significantly positive link between perceived feedback from adults (i.e., adult praise) and individual's own engagement in prosocial behaviors, and an inverse association between perceived feedback from adults (i.e., adult praise) and individual's own antisocial behaviors. No interaction effects were observed for perceived feedback from peers (i.e., coolness) on these associations. These findings extend literature regarding the processes through which peer involvement in prosocial behavior is linked to individual prosocial and antisocial behaviors. This study makes research advancements by considering the contributions of perceived feedback from both adults and peers that can both be significant during early adolescence. These results justify implications for practice and policy related to prevention/intervention efforts that include peer associations, since they matter for prosocial behavior.

The proposed thesis is comprised of eleven papers connected by the employment of the evolutionary psychological approach in research on various aspects of human sexuality. The aim of the first monothematic part is to demonstrate the evolutionary-psychological approach to one recent phenomenon in female sexuality - the use of oral contraceptives (OC). OC use has been shown to suppress psychological mechanisms that are considered to be adaptive in the fertile period of the natural menstrual cycle. In particular, OC users' ratings of male stimuli that provide the cues of genetic quality and compatibility are lower in comparison with normally cycling women. Moreover, the increase in sexual desire and in the prevalence of proceptive behaviour observed during mid-cycle in normally cycling women is diminished. However, the impact of this phenomenon on mate-choice and relationship dynamics in an ecological context has not been studied. In the first study, we have analyzed the data of Czech women obtained via representative sampling within the Czech National Survey of Sexual Behavior. Results indicated that normally cycling women had a significantly higher number of one-night stands during the last year in comparison to OC users even when living in a long-term relationship. OC usage was also shown to have...

Evolutionary psychology often relies on experimental methods for testing theories due to their capacity to isolate independent variables, thereby enhancing internal validity. The scientific problem in this study, however, lies in the fact that an increase in internal validity in experiments might risk reducing ecological validity. Therefore, the purpose of the study is to test experimental results from the evolutionary coalitional psychology in a real case, to evaluate the ecological validity of the theory. The case is the Ukraine war and the method is a qualitative thematic text analysis, of President Volodymyr Zelensky's speeches, close to Russia's invasion on February 24, 2022. The results reveal that the president in his speeches, motivates with a collective gain of participating in the defence of Ukraine, exhibits a punitive attitude towards perceived free-riders, and does not show any gender bias in his appeals. The evidence of collective gain and a punitive attitude is particularly notable as it aligns precisely with the theoretical expectations based on previous experimental results from coalitional psychology. This alignment between real-world findings and experimental predictions enhances the ecological validity of the theory, thus fulfilling the aim of the study. The conclusion is that evolutionary psychology can be effectively applied to real- world conflicts within peace and conflict studies.

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The current study examined whether there are sex-based differences in adolescents’ accuracy in perceiving and acceptance of parental socialisation values. Together with their parents, a total of 134 adolescents (aged 13 to 18) from private Christian schools in Johannesburg, South Africa participated in the study. After creating the measures of overall accuracy, overall acceptance, specific accuracy and specific acceptance, a series of mixed-design ANOVAs were conducted in order to evaluate the six research hypotheses. The results illustrated that there may be sex-based differences in adolescents’ accuracy in perceiving the importance that their mothers and fathers place on the value of power as a socialisation value. However, the overall results suggested that the focus on the effect of adolescent sex on adolescents’ accuracy in perceiving and acceptance of parental socialisation values was too narrow because various parent sex and adolescent sex interaction effects were found. Furthermore, there is no clear pattern indicating how sex influences adolescents’ accuracy in perceiving and acceptance of parental socialisation values, thus suggesting that the influence of sex is value-specific. / Psychology / M.A. (Psychology: Research Consultation)

Voices are used as a vehicle for language, and variation in the acoustic properties of voices also contains information about the speaker. Listeners use measurable qualities, such as pitch and formant traits, as cues to a speaker’s physical stature and attractiveness. Emotional states and personality characteristics are also judged from vocal stimuli. The research contained in this thesis examines vocal masculinity, aesthetics and personality, with an emphasis on the perception of prosocial traits including trustworthiness and cooperativeness. I will also explore themes which are more cognitive in nature, testing aspects of vocal stimuli which may affect trait attribution, memory and the ascription of identity. Chapters 2 and 3 explore systematic differences across vocal utterances, both in types of utterance using different classes of stimuli and across the time course of perception of the auditory signal. These chapters examine variation in acoustic measurements in addition to variation in listener attributions of commonly-judged speaker traits. The most important result from this work was that evaluations of attractiveness made using spontaneous speech correlated with those made using scripted speech recordings, but did not correlate with those made of the same persons using vowel stimuli. This calls into question the use of sustained vowel sounds for the attainment of ratings of subjective characteristics. Vowel and single-word stimuli are also quite short – while I found that attributions of masculinity were reliable at very short exposure times, more subjective traits like attractiveness and trustworthiness require a longer exposure time to elicit reliable attributions. I conclude with recommending an exposure time of at least 5 seconds in duration for such traits to be reliably assessed. Chapter 4 examines what vocal traits affect perceptions of pro-social qualities using both natural and manipulated variation in voices. While feminine pitch traits (F0 and F0-SD) were linked to cooperativeness ratings, masculine formant traits (Df and Pf) were also associated with cooperativeness. The relative importance of these traits as social signals is discussed. Chapter 5 questions what makes a voice memorable, and helps to differentiate between memory for individual voice identities and for the content which was spoken by administering recognition tests both within and across sensory modalities. While the data suggest that experimental manipulation of voice pitch did not influence memory for vocalised stimuli, attractive male voices were better remembered than unattractive voices, independent of pitch manipulation. Memory for cross-modal (textual) content was enhanced by raising the voice pitch of both male and female speakers. I link this pattern of results to the perceived dominance of voices which have been raised and lowered in pitch, and how this might impact how memories are formed and retained. Chapter 6 examines masculinity across visual and auditory sensory modalities using a cross-modal matching task. While participants were able to match voices to muted videos of both male and female speakers at rates above chance, and to static face images of men (but not women), differences in masculinity did not influence observers in their judgements, and voice and face masculinity were not correlated. These results are discussed in terms of the generally-accepted theory that masculinity and femininity in faces and voices communicate the same underlying genetic quality. The biological mechanisms by which vocal and facial masculinity could develop independently are speculated.

In this thesis I discuss one way in which evolutionary theory has been brought to bear on the evaluation of competing meta-normative views in epistemology. More specifically, I investigate whether normative realism in epistemology (epistemic realism) is compatible with the view that we are justified in holding many of the epistemic beliefs we hold, on the assumption that those beliefs can be explained in evolutionary terms. In Part I I discuss normativity in epistemology and meta-epistemology. I begin by drawing attention to the fact that there are very different ways of understanding which concepts in epistemology are normative and what their normativity consists in. I focus on the concept of an epistemic reason to illustrate this point. I then discuss, in some detail, how different interpretations of epistemic-normativity will affect the form which normative-realist views in epistemology can take. I conclude by drawing a taxonomy of epistemic-realist views which is mindful of the different interpretations of epistemic normativity which I distinguished. In Part II I turn to discuss the topic of Darwinian arguments against normative-realist views in epistemology. I begin by considering the form which Darwinian arguments have taken in recent metaethical literature. I argue that Darwinian arguments of a kind which is meant to raise a distinctively epistemological challenge for normative-realist views – I call those 'Darwinian-epistemological' arguments – represent a more interesting object of philosophical investigation than Darwinian arguments of a different 'metaphysical' kind. I then formulate a Darwinian-epistemological argument which targets normative-realist views in epistemology (DEA), explain how it works, and spend some time discussing its key premises. In Part III I engage with the Darwinian-epistemological challenge against realism about epistemic normativity that Sharon Street presents in her paper 'Evolution and the Normativity of Epistemic Reasons' (2009). I argue that Street’s epistemological challenge is best viewed as an instance of a Darwinian-epistemological argument of the kind I formulated (DEA). I then go on to reply to Street’s argument on behalf of the epistemic realist. I conclude that arguments with the form of DEA do not represent a serious threat for normative realist views in epistemology.