The positive link between children's joint attention skills and subsequent language outcomes is well established. There is also abundant evidence that responsive caregiver behaviors lead to optimal language outcomes. Though directive behaviors are generally considered detrimental to children's growth, specific types of directive behaviors which extend or build upon a child's behavior are thought to promote children's learning. No study has examined how caregiver behaviors interact with children's joint attention skills to affect subsequent language. Therefore, the objective of the present study was to examine how three different caregiver behaviors (Responsiveness, Supportiveness, and Intrusiveness) measured at 18 months moderated the relation between joint attention (also measured at 18 months) and language in two separate samples (a 24-month and a 36-month outcome sample). Intrusiveness was a significant moderator of the relation between RJA and 24-month language. RJA was a significant predictor of 24-month receptive and expressive language only in children whose caregivers had a low to moderate level of intrusiveness. Understanding the child and caregiver factors that promote or hinder children's language outcomes in children at risk for delay may help inform and target interventions that will help improve children's school readiness outcomes.

Decision making with the help of graphs has been applied for a long time. Previous to the introduction of computerized solutions, graphs and complementary pictures were hand drawn. With the introduction of computers came the colored and dynamic “animations” called simulations which are used today. The focal company of this study, Ångpanneföreningen AB, has during an extensive period of time constructed simulations of complex systems which they have used in order to satisfy specific needs of their customers in different areas. Depending on the complexity of the product and the needs it is ought to fulfill, the exchange of it will have a direct impact on the interactions carried out between the buying and selling parties in various ways. A question that this thesis looked to answer was how the utilization of simulations affects Ångpanneföreningen AB’s relationship with its customers. The purpose of this study is to describe how the use of a simulation program may affect the relation between two parties in a business relationship. A case study approach based on focused and semi-structural interviews has been used for this study.The effects of the use of simulations on a business relationship, in terms of benefits perceived, depend on the purpose set for the software. This meaning that it depends on whether the results and benefits are of such kind that they are possible to measure. However, if measurable, then the awareness of perceived benefits contributes to a stronger relationship since trust is likely to follow from met expectations. The simulation software offered by ÅF has the characteristics of both a product and a service with a highly technological nature. When dealing with simulations holding such attributes, a high level of exchanges is likely to be involved. Furthermore, interdependencies between two parties in a business relationship tend to develop as both the exchanges due to, and the complexities of, the simulation are of a high level, meaning that exchanges are needed in both directions.

Background: HIV/AIDS is one of the world’s most serious health challenges. Sub-Saharan Africa remains the region most heavily affected by HIV, with 69% of the people living with HIV in the world. Côte d'Ivoire has a high HIV prevalence rate and Senegal a low prevalence rate. The main research question is whether or not the HIV risk behavior of Ivorian differs from the HIV risk behavior of Senegalese in terms of selected categorical and continuous variables. In other words, if using condoms at last sexual intercourse differs between Côte d’Ivoire and Senegal. Methods: Cross-sectional data from the Measure Demographic and Health Survey (MDHS) involving 9,686 Ivorian and 18,363 Senegalese from 2005 were used. The Pearson Chi-square test were performed to determine any significant relationship between the variables across the two countries with respect to socio-demographic and HIV risky behaviors status. Univariate and multivariate analyses were performed to test the significance of any association between the independent and the dependent variables (Condoms used at last sexual intercourse). Throughout all the analysis performed, a p-value of 0.05 and confidence interval of 95% were used to determine any statistical significance. Results: Logistic regression models showed that Côte d’Ivoire respondents had decrease odds of using condoms during their last sexual intercourse (OR=0.7; 95% CI 0.62 - 0.79) as compared to Senegal and the difference was statistically significant at p < 0.05. In Côte d’Ivoire and Senegal, wealth and education have been consistently found to be positively associated with condoms used at last sexual intercourse. Conclusion: HIV risk behaviors seem to be associated with condoms used and marital status. The results in our study suggest a possible relation with condoms used, HIV prevalence and polygamy in Senegal, so men use condoms less frequently with marital partners. More studies need to assess the role of polygamy in the transmission and/or acquisition of HIV in Sub-Saharan Africa. Key words: HIV/AIDS, Risky behaviors, Condoms used, Côte d’Ivoire, Senegal

Grounded in Self-Determination Theory (Deci & Ryan, 1985, 2000), the purpose of this thesis was to investigate the protective role of self-determined (i.e., autonomous motivation) relative to non self-determined motivation (i.e., controlled motivation) in response to various media portrayals of the female body. Findings from three laboratory experiments support these hypotheses. Women who felt less self-determined in their daily activities (Study 1 and Study 3) and in the regulation of their eating behaviors (Study 2), perceived more pressure from the media to be thin (Study 1), experienced more body dissatisfaction (Study 1 and Study 2), expressed greater concerns over the quantity of food in their diets (Study 1), and reported more negative affect (Study 2) following exposure to a video which exemplified the societal ―thin ideal‖ compared to a video which did not. They also generated more negative self-appraisals of their body‘s appearance and competence (Study 3), experienced more body shame (Study 3), and reported more introjected reasons for restricting their actual intake of chocolate (Study 3) following exposure to video which depicted the female body as an instrument of women‘s actions compared to one which depicted the female body as object (Study 3). Conversely, women who felt more self-determined in their daily activities (Study 1 and Study 3) expressed greater concerns over the quality of food in their diet (Study 1) and reported less vitality (Study 3) in response to media portrayals of women engaged in self-care (Study 1) and physical activities (Study 3). However, body dissatisfied women who felt more self-determined in the regulation of their eating behaviors (Study 2) formulated more intentions to monitor their food intake and eat fewer unhealthy foods (Study 2) after viewing a video of thin female models compared to no models. Together, these findings support a protective function for self-determined motivation and a potentiating function for non self-determined motivation.

Perceptual-cognitive skills are important characteristics for sport participants, which have been shown to contribute to the expert advantage (Abernethy, Baker & Côté, 2005; Mann, Williams, Ward, & Janelle, 2004; McPherson, 2000). One such skill is visual attention, which is beneficial for athletes, but less commonly researched for sport officials. For this dissertation, three data collection procedures assisted in examining the visual behaviors of elite, intermediate and novice ice hockey referees. In phase one, 2 elite, 2 intermediate, and 2 novice referees wore helmet cameras for one game and subsequently participated in stimulated recall interviews to address visual behaviors that occurred during that game. The four resultant themes that emerged were: Divided Attention, Selective Attention, Positioning and Context, and Influences of Visual Attention. Within each of these major themes there were several similarities and differences amongst the referees. In phase two, 2 elite, 2 intermediate, and 2 novice focus groups watched one elite and one intermediate helmet camera videotape and discussed what they thought the referee was attending to and where they would direct their visual attention. The focus group transcripts were deductively coded to search for potential differences between the elite and intermediate referees based on the themes identified in phase one. It was evident that the elite referee was superior to the intermediate in several areas including: Maintaining a focus on the majority of players, knowing when to focus away from the puck, having better post-whistle attention, and being better positioned. Discussion related to how these advantages might be gained by learning through experience. For phase three, 10 elite, 10 intermediate, and 10 novice referees wore an eye-tracking device and made penalty decisions on ice hockey infractions presented on a computer screen. In this experiment, decision accuracy, decision type, number of fixations, and fixation duration were calculated. MANOVA results indicated that there were no significant differences across participant groups. The global discussion includes data excluded from the three main papers, alternative methods for further interpretation of the results, integration of the results of the three papers, and proposals for future research.

Many studies have documented adverse affects to inequitable situations in non-human primates. The behaviors that have predominantly been examined include food taking, collecting, giving, and refusals between the primate subjects and the experimenters. However, no studies had looked at the affective responses to inequity in primates. In a recent study, four-year old children who were rewarded inequitably accepted the reward, however they showed affective signs of dissatisfaction. For this study, we looked for affective displays in capuchins during inequitable exchange tasks. We predicted that the capuchins that were experiencing inequity would show more signs of agitation and aggression than those in equitable situations. We saw no increase in agitation or aggression when subjects were treated inequitably. There was higher aggression towards partners who received the lower reward in inequitable situations and less agitation seen by partners during frustration controls. Future studies may find our hypothesized results using different methodologies.

This study explored how cultural heritage might affect peoples beliefs, attitudes, and behaviors toward Environmental Tobacco Smoke (ETS), which in turn affected actual ETS exposure. It used data from the 2001 National Survey on Environmental Tobacco Smoke in the Home. It compared two cultural groups: Francophones and the rest of the Canadian population (RCP), and found that Francophone nonsmokers had a significantly higher ETS exposure than the RCP (19.3% vs. 8.5%). The difference was much greater than the difference in smoking prevalence for the two groups (26.2% vs. 22.4%). </p>The study found Francophones scored lower than the RCP in almost every aspect of ETS-related beliefs, attitudes, and behaviors. They were less likely to believe ETS to be harmful and less supportive of ETS-control policies. They were less likely to have done something that reduced ETS exposure at home. In both cultural groups, smokers scored lower than nonsmokers in ETS-related beliefs and attitudes. However, the difference between the two groups remained significant even if the comparisons were done within smokers and nonsmokers. </p>The most significant finding of the study was that Francophones were more likely to trust those so-called ETS-reduction strategies that appeared to be effective but were not in reality (e.g., opening the window when someone smokes). Moreover, there was a statistically significant interaction between smoking status and cultural heritage: fewer nonsmokers than smokers within each cultural group believed that these strategies were really effective, but the difference between the nonsmokers and smokers was significantly smaller for Francophones than that for the RCP. Therefore, the tendency to trust ineffective ETS-reduction strategies, especially among the nonsmokers, explained why Francophones were significantly less likely to adopt strategies that would actually reduce ETS exposure. </p>These results suggest that in order to move ETS policies forward and to effectively reduce ETS exposure among Canadian nonsmokers, the key strategy is to mobilize the nonsmokers to be less tolerant of ETS and more persistent in only allowing smoking to occur outdoors. This will not only help protect nonsmokers from the harm of ETS, but will eventually help smokers to quit smoking.

Grounded in Self-Determination Theory (Deci & Ryan, 1985, 2000), the purpose of this thesis was to investigate the protective role of self-determined (i.e., autonomous motivation) relative to non self-determined motivation (i.e., controlled motivation) in response to various media portrayals of the female body. Findings from three laboratory experiments support these hypotheses. Women who felt less self-determined in their daily activities (Study 1 and Study 3) and in the regulation of their eating behaviors (Study 2), perceived more pressure from the media to be thin (Study 1), experienced more body dissatisfaction (Study 1 and Study 2), expressed greater concerns over the quantity of food in their diets (Study 1), and reported more negative affect (Study 2) following exposure to a video which exemplified the societal ―thin ideal‖ compared to a video which did not. They also generated more negative self-appraisals of their body‘s appearance and competence (Study 3), experienced more body shame (Study 3), and reported more introjected reasons for restricting their actual intake of chocolate (Study 3) following exposure to video which depicted the female body as an instrument of women‘s actions compared to one which depicted the female body as object (Study 3). Conversely, women who felt more self-determined in their daily activities (Study 1 and Study 3) expressed greater concerns over the quality of food in their diet (Study 1) and reported less vitality (Study 3) in response to media portrayals of women engaged in self-care (Study 1) and physical activities (Study 3). However, body dissatisfied women who felt more self-determined in the regulation of their eating behaviors (Study 2) formulated more intentions to monitor their food intake and eat fewer unhealthy foods (Study 2) after viewing a video of thin female models compared to no models. Together, these findings support a protective function for self-determined motivation and a potentiating function for non self-determined motivation.

Perceptual-cognitive skills are important characteristics for sport participants, which have been shown to contribute to the expert advantage (Abernethy, Baker & Côté, 2005; Mann, Williams, Ward, & Janelle, 2004; McPherson, 2000). One such skill is visual attention, which is beneficial for athletes, but less commonly researched for sport officials. For this dissertation, three data collection procedures assisted in examining the visual behaviors of elite, intermediate and novice ice hockey referees. In phase one, 2 elite, 2 intermediate, and 2 novice referees wore helmet cameras for one game and subsequently participated in stimulated recall interviews to address visual behaviors that occurred during that game. The four resultant themes that emerged were: Divided Attention, Selective Attention, Positioning and Context, and Influences of Visual Attention. Within each of these major themes there were several similarities and differences amongst the referees. In phase two, 2 elite, 2 intermediate, and 2 novice focus groups watched one elite and one intermediate helmet camera videotape and discussed what they thought the referee was attending to and where they would direct their visual attention. The focus group transcripts were deductively coded to search for potential differences between the elite and intermediate referees based on the themes identified in phase one. It was evident that the elite referee was superior to the intermediate in several areas including: Maintaining a focus on the majority of players, knowing when to focus away from the puck, having better post-whistle attention, and being better positioned. Discussion related to how these advantages might be gained by learning through experience. For phase three, 10 elite, 10 intermediate, and 10 novice referees wore an eye-tracking device and made penalty decisions on ice hockey infractions presented on a computer screen. In this experiment, decision accuracy, decision type, number of fixations, and fixation duration were calculated. MANOVA results indicated that there were no significant differences across participant groups. The global discussion includes data excluded from the three main papers, alternative methods for further interpretation of the results, integration of the results of the three papers, and proposals for future research.

Childhood obesity is a growing concern for practitioners and researchers. In addition to obesity being a risk factor for cardiovascular disease, children classified as obese are more likely to demonstrate other risk factors associated with cardiovascular disease. Furthermore, children classified as obese are more likely to be victims of bullying and discrimination. This dissertation tested a dynamic cascade model of the development of childhood obesity. It was hypothesized that externalizing behaviors and internalizing problems would lead to increased body mass index. This model was tested in Mplus v7 (Muthén & Muthén, 1998) using data from the NICHD Study of Early Child Care. This dissertation used parent report of externalizing behaviors and internalizing behaviors, teacher report of externalizing behaviors, and body mass index to examine several different ways in which developmental psychopathology related to childhood obesity. The results suggested that body mass index predicts the development of internalizing problems in late childhood. However, externalizing behaviors were not directly or indirectly associated with body mass index. These findings suggested that the assessment of children with internalizing problems should include an assessment of their weight and weight related concerns.