O presente estudo teve como objetivo investigar a rivalidade fraterna desde a gestação até os 24 meses de vida do segundo filho em famílias com um primogênito em idade pré-escolar, a partir da perspectiva dos progenitores. De modo especial, buscou-se compreender como se manifesta e como se desenvolve a rivalidade fraterna ao longo dos 2 anos iniciais da relação. Além disso, o estudo visou a examinar as possíveis interações estabelecidas entre esta dimensão do relacionamento fraterno e o relacionamento parental. Para tanto, através de um estudo de caso coletivo, 4 casais de progenitores de famílias com dois filhos responderam separadamente a entrevistas semidirigidas, em 4 momentos de coleta de dados (3º. trimestre de gestação, aos 3, 6, 12 e 24 meses de vida do segundo filho). A análise de conteúdo qualitativa indicou que no período inicial após o nascimento do irmão, a rivalidade fraterna se manifestou prioritariamente através do ciúme do primogênito em relação aos progenitores. Conforme o segundo filho passou a apresentar maior capacidade motora e de comunicação, essa passou a se expressar também através das competições e das disputas diretas entre os irmãos. Além disso, os dados indicaram uma possível inter-relação do relacionamento parental com o surgimento do ciúme do primogênito em relação aos progenitores com o irmão, enquanto que a disputa e a competição fraterna pareceram estar relacionadas ao curso do desenvolvimento do segundo filho. Estes achados apontam para uma compreensão da rivalidade fraterna como constitutiva do relacionamento fraterno, imersa no processo de crescimento e transformação da família como um todo. / The present study aimed to investigate sibling rivalry in preschool firstborns from parents’ perspective, from pregnancy to the second child’s 24th months. In particular, it aimed to understand how sibling rivaly manifests itself and develops through the initial 2 years of the sibling’s relationship. In addition, the study aimed to examine possible interactions between sibling rivalry and parental relationship. A collective-case study was carried out with four families comprising both parents and two children. Fathers and mothers answered separately to a semistructured interview, comprising four moments of data collection (3rd trimester of pregnancy, at 3, 6, 12 and 24 months of the second child). Qualitative content analysis indicated that in the initial period after the second child’s birth sibling rivalry expressed itself primarily through the firstborn’s jealousy towards parents. As the second child showed more motor and communication skills, sibling rivalry was also expressed through direct competition and disputes between siblings. Moreover, the data indicated a possible interrelation between parental relationship and the emergence of the firstborn’s jealousy towards parents, while sibling dispute and competition seemed to be related to the second child’s course of development. These findings bring an understanding of sibling rivalry as constitutive of sibling relationships and as part of the process of growth and transformation of the family as a whole.

Jealousy is understood as a system of physiological, behavioral, and emotional responses, yet few studies have examined these aspects of jealousy simultaneously in infants. Further, jealousy paradigms have not been examined as a potential stressor in infancy and thus typical cortisol reactivity and regulation patterns in response to jealousy paradigms have not been observed. In addition, the contribution of attachment security to infant expressions of jealousy has been vastly understudied. The present study seeks to fill the current gaps in the infant jealousy literature by investigating quantitative and qualitative changes in infant jealousy across the first two years of life. Data was collected longitudinally and mother- infant dyads were asked to participate when infants were 12- months and 24-months of age. Associations between behavioral jealousy responses, baseline EEG activity, stress reactivity and attachment security were examined. Differences in approach behaviors and behavioral arousal were found across conditions and were consistent with previous studies (Hart & Carrington, 2002; Mize & Jones, 2012). Findings relating to EEG activity pointed to a relationship between left EEG asymmetry and global approach behaviors across time. Cortisol reactivity was found to be associated with attachment security but reactive cortisol concentrations compared to baseline cortisol concentrations do not indicate that the paradigm was an effective stressor. Attachment security was found to be associated with proximity behaviors in 12- month olds but not 24-month olds. Finally, a linear regression revealed that attachment security, EEG asymmetry, and cortisol reactivity at 12-months are significant predictors of behavioral jealousy responses at 24-months. Changes in behavioral and physiological measures across time indicate that jealousy continues to develop during the second year of life but may have different underlying processes than the processes that contribute to jealousy expression in 12-month-olds. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2017. / FAU Electronic Theses and Dissertations Collection

<p>Males and females differ in morphology and behaviour, so that selection acts differently on the two sexes. This changes the relative reproductive success of males and females, and it is beneficial for parents to bias the sex ratio of their broods in favour of the sex with the best survival and breeding prospects. Differences between the sexes and brood sex ratio in Tengmalm’s owl (Aegolius funereus) in northern Sweden were investigated, using a molecular sexing technique based on PCRamplification of sex-linked CHD1 genes. Among owls caught during autumn migration, females were commoner than males, especially within juveniles. However, in contrast to earlier studies, it was shown that adult males sometimes undertake migratory movements indicatory of nomadism. Measurements of these owls revealed that sexual size dimorphism in Tengmalm’s owl is not as great as previously reported from studies carried out during the breeding season. Females were slightly larger (4% by mass) than males, probably owing to the different roles of males and females during breeding, when this dimorphism is greater. The size difference between male and female nestlings was found to be similar to that for adults in autumn, and to investigate whether this led to differential mortality, the effect of supplementary feeding on mortality of male and female nestlings was studied. Supplementary feeding reduced male mortality when vole abundance was low, and it was concluded that larger female nestlings out-competed their smaller brothers, who then suffered increased mortality when food was scarce. Recruitment of male nestlings into the breeding population declined with decreasing food supply at the time of fledging, a pattern not observed in females. Juvenile males were therefore more vulnerable to food shortage than females, both in the nest and after fledging. Mean brood sex ratio varied significantly among years characterized by different phases of the vole cycle and associated vole abundance. Broods were male-biased (63% males) in a year when the food supply was favourable during spring and summer, neutral (50%) in a year with an intermediate food supply, and female-biased (35% males) in a year when food was in short supply. Parents appeared to adaptively adjust the sex ratio of their broods according to the relative mortality risk and reproductive potential of sons and daughters.</p>

Males and females differ in morphology and behaviour, so that selection acts differently on the two sexes. This changes the relative reproductive success of males and females, and it is beneficial for parents to bias the sex ratio of their broods in favour of the sex with the best survival and breeding prospects. Differences between the sexes and brood sex ratio in Tengmalm’s owl (Aegolius funereus) in northern Sweden were investigated, using a molecular sexing technique based on PCRamplification of sex-linked CHD1 genes. Among owls caught during autumn migration, females were commoner than males, especially within juveniles. However, in contrast to earlier studies, it was shown that adult males sometimes undertake migratory movements indicatory of nomadism. Measurements of these owls revealed that sexual size dimorphism in Tengmalm’s owl is not as great as previously reported from studies carried out during the breeding season. Females were slightly larger (4% by mass) than males, probably owing to the different roles of males and females during breeding, when this dimorphism is greater. The size difference between male and female nestlings was found to be similar to that for adults in autumn, and to investigate whether this led to differential mortality, the effect of supplementary feeding on mortality of male and female nestlings was studied. Supplementary feeding reduced male mortality when vole abundance was low, and it was concluded that larger female nestlings out-competed their smaller brothers, who then suffered increased mortality when food was scarce. Recruitment of male nestlings into the breeding population declined with decreasing food supply at the time of fledging, a pattern not observed in females. Juvenile males were therefore more vulnerable to food shortage than females, both in the nest and after fledging. Mean brood sex ratio varied significantly among years characterized by different phases of the vole cycle and associated vole abundance. Broods were male-biased (63% males) in a year when the food supply was favourable during spring and summer, neutral (50%) in a year with an intermediate food supply, and female-biased (35% males) in a year when food was in short supply. Parents appeared to adaptively adjust the sex ratio of their broods according to the relative mortality risk and reproductive potential of sons and daughters.

The following report describes the pre-production, production, and post-production of the short film, 8.BIT.BROS, designed from its inception to fully exploit the years-developed, cumulative and varied skills of its director. The fantastical narrative focuses on the strained emotional dynamic between two adult brothers that have yet to come to terms with having witnessed their father’s death as children. Their trauma is dramatized and encapsulated in the videogame-themed psychotic hallucinations of the film’s protagonist. The director’s specialized skill-set was put to practical use in both the creation of animatronic creature effect, “Commander Gorgo,” and during the post-production phase of the film, wherein green screen compositing, animation, and motion graphics were used at length to bring the narrative life. / text

Habilitationsschrift--Hamburg. / Bibliography: p. 171-182.

Habilitationsschrift--Hamburg. / Bibliography: p. 171-182.

Educational Studies / M. Ed.

Thesis (doctoral)--Universität, Santiago de Compostela, 1997. / Includes bibliographical references (p. [239]-259) and index.

Thesis (doctoral)--Universität, Santiago de Compostela, 1997. / Includes bibliographical references (p. [239]-259) and index.