This mixed-methods study investigated the relationship between self-concept and problem-solving style and how these two constructs compared and contrasted in regards to a participant's perception of his or her problem-solving ability. The 86 study participants were high-achieving rising 11th and 12th grade students attending a summer enrichment program for agriculture. This study used a concurrent triangulation mixed methods design. The quantitative aspect of the study employed two instruments, SDQ III to test perceived self-concept and the VIEW to determine the perceived problem-solving style. Concurrent with this data collection, 13 open-ended interviews were conducted to explored the description of the problem-solving process during a problem-solving event. The reason for collection of both quantitative and qualitative data was to bring together the strengths of both forms of research in order to merge the data to make comparisons and further the understanding of problem-solving ability of high-achieving youth. The study discovered that self-concept and problem-solving style have a weak relationship for many of the constructs and a negative relationship between two of constructs. The qualitative component revealed that high-achieving youth had clear definitions of problem-solving, a rich and descriptive heuristic approach, a clear understanding of which resources provided key information, and a strong depiction of themselves as problem-solver. An emergent concept from the research was the participants' perceptions of the team-based structure and how the inclusion of multiple ability levels versus high ability levels affected the participants' perceptions of solving a problem in a team situation. The mixing component of the study depicted the influence of self-concept on the problem-solving style. This study was an initial exploration of the relationship between self-concept and problem-solving and compared the current results with previous research. It extended and connected the previous research areas of self-concept and problem-solving style. As an initial study, it led to recommendations for further research across education as well as additional exploration of the emergent relationships identified. Finally, the study denoted the importance of mixed-methods research due to the interconnectivity between self-concept and problem-solving style and the participant descriptions of themselves as problem-solvers. / Ph. D.

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Made available in DSpace on 2014-12-17T15:36:36Z (GMT). No. of bitstreams: 1 AndreLBM_DISSERT.pdf: 1779818 bytes, checksum: 62dcf6f324fa9f364c87ce6105fee4f5 (MD5) Previous issue date: 2010-11-13 / The cooperative behavior is no longer a dilemma for the theory of evolution, since there are models that explain the evolution of this behavior by means of natural selection at the individual level. However, there have been few studies on the proximal factors that interfere with cooperative behavior. In the study of the influence of cognition on cooperation, many authors have been interested in situations in which individuals decide whether to act cooperatively and select partners with different qualities to cooperate. Of the factors studied, we highlight the need for understanding the apparatus and communication between partners to the occurrence of cooperation. Recently, highlight is the proposal that the ability to cooperate would be greater in species with cooperative breeding system. Thus, the common marmoset (Callithrix jacchus) is a New World monkey which stands as a valuable species for this type of study because it presents cooperative actions in nature, such as sharing food and protection of the community territory. Our experiment investigated whether common marmosets unrelated females (n = 6) were able to cooperate using an electrical and a mechanical apparatus, if this cooperation is a byproduct of individual actions or involve social attention, if it occurs inter-individual variation in the use of devices and formation of roles (producer / scrounger) in dyads. We use the number of rewards obtained by animals (Ratio of Correct Pulls) as indicators of cooperation and glances for partners (Ratio of Correct Glances) as indicators of social attention and communication. The results indicate that the type of apparatus was not a constraint for the occurrence of cooperation between the marmosets, but still has not been verified formation of roles in the dyads. The performance of animals in the two devices showed a large variation in the learning time, not having relationship with the performance in the tests phase. In both devices the level of social glances at control phases were casually correlated with any other phase, but the data showed that there was not social attention, that is, the monkeys realized that they gave food to the partners, but the partners did / O comportamento de coopera??o n?o constitui mais um dilema para a Teoria da Evolu??o, j? existindo modelos que explicam a evolu??o deste comportamento por meio da Sele??o Natural em n?vel de indiv?duo. Entretanto, ainda s?o poucos os estudos sobre os fatores proximais que interferem no comportamento cooperativo. No estudo da influ?ncia da cogni??o na coopera??o, muitos autores tem se interessado por situa??es nas quais os indiv?duos decidem se v?o agir cooperativamente e selecionam parceiros com diferentes qualidades para cooperar. Dos fatores estudados, destaca-se a necessidade de compreens?o do aparato e de comunica??o entre os parceiros para a ocorr?ncia de coopera??o. Recentemente, ganha destaque a proposta de que a capacidade de cooperar seria maior em esp?cies com cuidado cooperativo a prole. Assim sendo, o sag?i (Callithrix jacchus) ? um macaco do Novo Mundo que se destaca como uma esp?cie valiosa para esse tipo de estudo, pois apresenta a??es cooperativas na natureza, como partilha de alimento e defesa comunit?ria de territ?rio. O nosso experimento investigou se sag?is f?meas n?o aparentadas (n = 6) s?o capazes de cooperar usando um aparato el?trico e um mec?nico, se essa coopera??o ? um subproduto de a??es individuais ou envolve aten??o social, e se ocorre varia??o inter-individual no uso dos aparatos e forma??o de pap?is (produtor/parasita) nas d?ades. Usamos o n?mero de recompensas obtidas pelos animais (?ndice de Puxadas Corretas) como indicadores de coopera??o e os olhares para os parceiros (?ndice de Olhares Sociais) como indicadores de aten??o social e comunica??o. Os resultados indicam que o tipo de aparato n?o foi uma limita??o para a ocorr?ncia de coopera??o entre os sag?is, mas mesmo assim n?o foi verificado forma??o de pap?is nas d?ades. O desempenho dos animais nos dois aparatos apresentou uma grande varia??o quanto ao tempo de aprendizagem, n?o tendo esta, correla??o com as performances nas fases teste. Em ambos os aparatos os n?veis dos olhares sociais nas fases controle apresentaram correla??es eventuais com outras fases, por?m os dados demonstram que n?o houve aten??o social, isto ?, os sag?is percebiam que doavam comida aos parceiros, mas n?o que o parceiro estava doando para eles. Isso indica que os poucos atos cooperativos observados foram um subproduto de atos individuais e n?o coopera??o verdadeira

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S’approvisionner en nourriture est essentiel à la survie et au succès reproducteur. Lorsque les animaux font face à des changements environnementaux brutaux, ils doivent s’ajuster rapidement à leur nouvel environnement et parfois même innover dans leur façon de s’approvisionner. Des processus comportementaux et cognitifs, tels que l’innovation et l’apprentissage, permettent aux animaux d'intégrer de nouveaux comportements à leur répertoire comportemental afin de s'adapter de façon optimale. Les performances cognitives varient entre les individus d’une même population et bien que des études récentes se soient intéressées aux causes de ce phénomène, de convaincantes évidences sont manquantes afin d’expliquer pourquoi ces variations sont maintenues. Au cours de ce mémoire, les questions des pressions de sélection s'exerçant sur les performances d’alimentation par une tâche motrice nouvelle sont abordées afin de mieux comprendre l'évolution des capacités cognitives au sein d'une population captive de diamants mandarins (Taeniopygia guttata). Nous avons tout d'abord testé si les femelles diamants mandarins modifient leurs préférences d'accouplement après avoir observé la performance d'alimentation par une tâche motrice nouvelle des mâles. Afin de déterminer si les femelles sont capables de discriminer entre les mâles sur la base de leur capacité cognitive, nous avons également évalué les performances d’apprentissage de chacune d’elles. En effet, des études ont suggéré qu’il peut être coûteux, spécialement en terme de temps, de discriminer entre des partenaires potentiels sur cette base. La généralisation d’une préférence pour un mâle performant à d’autres mâles possédant le même phénotype permettrait la réduction de ces coûts. Nous avons donc finalement testé si les femelles diamants mandarins peuvent généraliser leur préférence après avoir observé les performances d’alimentation pour une tâche motrice nouvelle d’un mâle. Nos résultats suggèrent que les femelles diamants mandarins ne peuvent évaluer les capacités cognitives d’un mâle par l’intermédiaire de traits indicateurs. Toutefois, nous avons démontré qu’une observation directe des performances d’alimentation d’un mâle guide le choix d’appariement des femelles. Également, nous avons montré que les femelles peuvent généraliser l’apparence du mâle le plus performant et utiliser cette information lors de l’évaluation de nouveaux mâles. La relation entre les performances cognitives et le choix de partenaire pourraient s’expliquer par exemple par une meilleure exploitation de l’habitat, mais nécessite des études plus approfondies. / Successful foraging is essential for survival and reproductive success. When animals face rapidly change due to climate change or anthropogenic habitat destruction, they are force to quickly adjust their behaviour such as foraging. Innovation and learning, two processes related to cognitive functions, are know to allow animals to incorporate novel behaviours into their behavioural repertoires and thus to facilitate optimal responses to environmental change. Cognitive performance vary between and within individuals and although several studies have rencently addressed the causes, convicing evidences for why inter-individual variations in cognitive performance are maintained in a population are still lacking. During my Masters, I investigated different selective pressures acting on foraging performance on a novel motor task to better understand the evolution of cognitive abilities in a captive population of zebra finch (Taeniopygia guttata). Firstly, we investigated whether female zebra finches modify their mating preferences after having observed the foraging performance of males on a novel motor task. We also assessed each bird’s learning performance in a color associative task in order to check whether females could discriminate between the two males based on their learning performance. Discriminating among mates based on their cognitive ability might be very costly for females, especially in terms of time. Therefore, one way to reduce the cost of assessing mate would be to generalize their preferences to any male with the same phenotype as the most efficient observed individual. We finaly investigated whether female zebra finches can generalize their mating preferences after having observed a male’s foraging performance on a novel motor task. Our findings suggest that female zebra finches would be unable to assess male cognitive ability indirectly via morphological traits. However our results demonstrate that direct observation of the males’ performance on a foraging task can guide female mating preferences. We also demonstrates that female zebra finches can generalize the appearance of the male that is the most efficient at solving a motor task and then use this information to assessing new males. The relationship between cognitive performance and mating preference might be mediated throught habitat exploitation for example, but requires further investigation.