Comportamentos parentais, orientação motivacional e objetivos desportivos: um estudo com jovens atletas

[POR] Este estudo analisou a relação entre comportamentos parentais, orientação motivacional e perceção de rendimento desportivo em jovens atletas. Participaram nesta investigação 711 atletas (89 raparigas e 622 rapazes), com idades entre os 12 e os 19 anos (M=14.77; DP=1.86).

Étude des liens entre l’orientation mentale paternelle et le développement des manifestations morales à l’âge préscolaire

Essai présenté à la Faculté des arts et des sciences en vue de l’obtention du doctorat en psychologie (D.Psy.)

Intraspecific and intraspecific views of colour signals in the strawberry poison frog Dendrobates Pumilio

Poison frogs in the anuran family Dendrobatidae use bright colors on their bodies to advertise toxicity. The species Dendrobates pumilio Schmidt 1858, the strawberry poison frog, shows extreme polymorphism in color and pattern in Panama. It is known that females of D. pumilio preferentially choose mates of their own color morph. Nevertheless, potential predators must clearly see and recognize all color morphs if the aposermatic signaling system is to function effectively. We examined the ability of conspecifics and a model predator to discriminate a diverse selection of D. pumilio colors from each other and from background colors. Microspectrophotometry of isolated rod and cone photoreceptors of D. pumilio revealed the presence of a trichromatic photopic visual system. A typical tetrachromatic bird system was used for the model predator. Reflectance spectra of frog and background colors were obtained, and discrimination among spectra in natural illuminants was mathematically modeled. The results revealed that both D. pumilio and the model predator discriminate most colors quite well, both from each other and from typical backgrounds, with the predator generally performing somewhat better than the conspecifics. Each color morph displayed at least one color signal that is highly visible against backgrounds to both visual systems. Our results indicate that the colors displayed by the various color morphs of D. pumilio are effective signals both to conspecifics and to a model predator.

Two -way direction of influence in mother-infant interaction as denoted by concurrent reciprocal learning processes

This series of 5 single-subject studies used the operant conditioning paradigm to investigate, within the two-way influence process, how (a) contingent infant attention can reinforce maternal verbal behaviors during a period of mother-infant interaction and under subsequent experimental manipulation. Differential reinforcement was used to determine if it is possible that an infant attending to the mother (denoted by head-turns towards the image of the mother plus eye contact) increases (reinforces) the mother's verbal response (to a cue from the infant) upon which the infant behavior is contingent. There was also (b) an evaluation during the contrived parent-infant interaction for concurrent operant learning of infant vocal behavior via contingent verbal responding (reinforcement) implemented by the mother. Further, it was noted (c) whether or not the mother reported being aware that her responses were influenced by the infant's behavior. Findings showed: the operant conditioning of the maternal verbal behaviors were reinforced by contingent infant attention; and the operant conditioning of infant vocalizations was reinforced by contingent maternal verbal behaviors. No parent reported (1) being aware of the increase in their verbal response reinforced during operant conditioning of parental behavior nor a decrease in those responses during the DRA reversal phase, or (2) noticing a contingency between infant's and mother's response. By binomial 1-tail tests, the verbal-behavior patterns of the 5 mothers were conditioned by infant reinforcement (p < 0.02) and, concurrently, the vocal-response patterns of the 5 infants were conditioned by maternal reinforcement (p < 0.02). A program of systematic empirical research on the determinants of concurrent conditioning within mother-child interaction may provide a way to evaluate the differential effectiveness of interventions aimed at improving parent-child interactions. The work conducted in the present study is one step in this direction. ^

O Papel dos Estilos Educativos Parentais na Sintomatologia Ansiosa de Adolescentes do 3º Ciclo do Ensino Básico

A literatura realça a importância do impacto do comportamento parental no desenvolvimento de ansiedade em crianças e adolescentes. Dado a pertinência do tema, o foco do presente estudo visa analisar o papel que a perceção dos adolescentes sobre os estilos educativos parentais tem sobre a manifestação de sintomatologia ansiosa. A amostra desta investigação envolveu 136 adolescentes do 3º ciclo do ensino básico, 48 rapazes e 88 raparigas com idades compreendidas entre os 12 e os 15 anos, com uma média de idades de 13,2 anos, recolhida no Colégio São Martinho em Coimbra. O protocolo de investigação incluiu os seguintes instrumentos de colheita de dados: Questionário Sociodemográfico, State-Trait Anxiety Inventory for Children (STAIC) e EMBU-A. Os resultados do estudo sugerem que os adolescentes mais velhos manifestam maior sintomatologia ansiosa, estatisticamente significativa ao nível da ansiedade-estado. No que respeita ao desempenho académico, são os adolescentes com elevado insucesso escolar que exteriorizam mais ansiedade-traço. Porém, não foram encontradas diferenças significativas na manifestação da ansiedade dos adolescentes em função das variáveis género, posição na fratria e habilitações literárias dos pais. Por seu lado, em relação aos estilos educativos parentais, os jovens que têm maior insucesso escolar percecionam níveis elevados de sobreproteção da mãe, e de rejeição do pai e da mãe. Os adolescentes que têm um pai com mais baixo nível de escolaridade percecionam maior rejeição materna, e são os filhos de mães com menos habilitações literárias que sentem maior sobreproteção da mãe e rejeição do pai. Verificou-se, em particular, uma associação significativa entre a rejeição paterna e níveis mais elevados de sintomatologia ansiosa. O modelo preditivo avançado no estudo confirma que a rejeição paterna, em conjunto com a idade do adolescente, são bons preditores da sintomatologia ansiosa. Especificamente, a rejeição paterna é evidenciada como o melhor preditor da sintomatologia ansiosa, sendo o principal responsável pela manifestação de ansiedade nos adolescentes. Os resultados sugerem que a rejeição do pai desencadeia níveis elevados de sintomatologia ansiosa. Assim, este estudo permite concluir que a rejeição paterna é o estilo educativo parental que exerce maior influência na manifestação de ansiedade nos adolescentes. / The literature highlights the importance of the impact of parental behavior on the development of anxiety in children and adolescents. Given the relevance of the topic, the focus of this study is to analyze the role that the adolescents’ perception about parental rearing styles have on the manifestation of anxiety symptoms. The sample of this research involved 136 adolescents from the 3rd cycle of basic education, 48 boys and 88 girls aged between 12 and 15 years, with a mean age of 13,2 years, gathered in Colégio São Martinho in Coimbra. The investigation protocol included the following data collection instruments: Sociodemographic Questionnaire, State-Trait Anxiety Inventory for Children (STAIC) and the EMBU-A. The results of the study suggest that older adolescents show greater anxiety symptoms, statistically significant at the level of state anxiety. With regard to academic performance, are adolescents with high failure rates that externalize more trait anxiety. However, there were significant differences in the manifestation of anxiety in adolescents function of the variables gender, sibling position and educational background of the parents. For its part, in relation to parental rearing styles, young people who have higher academic failure perceive high levels of overprotection of the mother, and rejection of father and mother. Adolescents who have a father with the lowest educational level perceive greater maternal rejection, and are the children of mothers with less qualification who feel greater overprotection of the mother and father's rejection. There was, in particular, a significant association between paternal rejection and higher levels of anxiety symptoms. The predictive model advanced in the study confirms that parental rejection, together with the adolescents’ age, are good predictors of anxiety symptoms. Specifically, parental rejection is evidenced as the best predictor of anxiety symptoms, being primarily responsible for the manifestation of anxiety in adolescents. The results suggest that the father rejection triggers high levels of anxiety symptoms. Thus, this study shows that rejection is the paternal parental rearing style that has more influence on the manifestation of anxiety in adolescents.

Influence of Food Distribution and Human Disturbance on the Reproductive Success of Herring Gulls

A three year study of Herring Gull (Larus argentatus) reproductive success on four i~lands in Maine indicate.d that production of young was controlled by different factors operating on the eggs and chicks. Hatching success was inversely related to the disturbance of co.Ionics by pic~i~kers, which apparently caused the adults to leave their eggs exposed 10 sufficient solar rad1a11on to addle the eggs. The survival of chicks was lower on islands distant ~rom sources of edible r~~use (ou.ter. islands) than o.n. islands close to sources of waste (inner islands), regardless of visits by picnickers. The nutrition and growth rates of chicks on inner and outer islands were similar. The attendance of parents on the territories was found to be less o~ an out~r islan~ than on an inner island. It is concluded that differences in parental behavior associated with greater foraging effort were responsible for a higher loss of chicks to predation on the outer islands.

A Parentalidade tardia : Os pais, os filhos e o amanhã

Dissertação de Mestrado apresentada no Instituto Superior de Psicologia Aplicada para obtenção de grau de Mestre na especialidade de Psicologia Clínica

Genetic origin of the relationship between parental negativity and behavior problems from early childhood to adolescence: A longitudinal genetically sensitive study.

Little is known about how genetic and environmental factors contribute to the association between parental negativity and behavior problems from early childhood to adolescence. The current study fitted a cross-lagged model in a sample consisting of 4,075 twin pairs to explore (a) the role of genetic and environmental factors in the relationship between parental negativity and behavior problems from age 4 to age 12, (b) whether parent-driven and child-driven processes independently explain the association, and (c) whether there are sex differences in this relationship. Both phenotypes showed substantial genetic influence at both ages. The concurrent overlap between them was mainly accounted for by genetic factors. Causal pathways representing stability of the phenotypes and parent-driven and child-driven effects significantly and independently account for the association. Significant but slight differences were found between males and females for parent-driven effects. These results were highly similar when general cognitive ability was added as a covariate. In summary, the longitudinal association between parental negativity and behavior problems seems to be bidirectional and mainly accounted for by genetic factors. Furthermore, child-driven effects were mainly genetically mediated, and parent-driven effects were a function of both genetic and shared-environmental factors.

NESTLING BEHAVIOR and PARENTAL CARE of THE COMMON POTOO (NYCTIBIUS GRISEUS) IN SOUTHEASTERN BRAZIL

We recorded and quantified the nocturnal activity and parental care of a brooding Common Potoo (Nyctibius griseus) using an infrared camera in southeastern Brazil. Parents alternated care of the nestling and decreased their presence as the nestling grew. Nestling feeding on passing insects while sitting on the nest, movements on the nest, wing exercising, preening, and defecating were recorded primarily while it was alone. The frequency of begging calls per hour was higher when the nestling was accompanied by one of the parents. Nocturnal recordings of this species on the nest revealed behaviors that were not cited in past studies, including: feedings bouts on passing flies performed by the nestling and adults, nestling defecation, and nestling plumage maintenance. The well-known plus newly quantified behaviors of the Common Potoo reinforce their value to survival during the long nestling period. Received 24 May 2010. Accepted 14 September 2010.

Reproductive behavior and parental roles of the cichlid fish Laetacara araguaiae

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Parental attachment and conflict behavior: Implications for offspring's attachment, loneliness, and relationship satisfaction

This study assessed the implications of parental attachment security and parental conflict behavior for offspring's relational adjustment (attachment security, loneliness, and relationship satisfaction). Further, reports of parental conflict behavior were obtained from both parents and offspring, addressing questions regarding agreement between reporters and the origin and extent of discrepant perceptions. Results revealed consistent patterns of conflict behavior and moderate agreement between reporters. However, offspring reported parental conflict behavior more negatively than parents, especially when offspring or parents were anxious about relationships. Parental attachment security had direct associations with offspring's relationship anxiety, whereas associations between parental attachment and offspring's loneliness and discomfort with closeness were mediated by parental conflict behavior. Parental conflict behavior was also associated with offspring's relationship satisfaction. The results are discussed in terms of the mechanisms involved in the intergenerational transmission of relationship difficulties.

Reproductive behavior, development and eye regression in the cave armored catfish, Ancistrus cryptophthalmus Reis, 1987 (Siluriformes: Loricariidae), breed in laboratory

The troglobitic armored catfish, Ancistrus cryptophthalmus (Loricariidae, Ancistrinae) is known from four caves in the São Domingos karst area, upper rio Tocantins basin, Central Brazil. These populations differ in general body shape and degree of reduction of eyes and of pigmentation. The small Passa Três population (around 1,000 individuals) presents the most reduced eyes, which are not externally visible in adults. A small group of Passa Três catfish, one male and three females, reproduced spontaneously thrice in laboratory, at the end of summertime in 2000, 2003 and 2004. Herein we describe the reproductive behavior during the 2003 event, as well as the early development of the 2003 and 2004 offsprings, with focus on body growth and ontogenetic regression of eyes. The parental care by the male, which includes defense of the rock shelter where the egg clutch is laid, cleaning and oxygenation of eggs, is typical of many loricariids. On the other hand, the slow development, including delayed eye degeneration, low body growth rates and high estimated longevity (15 years or more) are characteristic of precocial, or K-selected, life cycles. In the absence of comparable data for close epigean relatives (Ancistrus spp.), it is not possible to establish whether these features are an autapomorphic specialization of the troglobitic A. cryptophthalmus or a plesiomorphic trait already present in the epigean ancestor, possibly favoring the adoption of the life in the food-poor cave environment. We briefly discuss the current hypotheses on eye regression in troglobitic vertebrates.

Behavior and viability of spontaneous oxidative stress-resistant Lactococcus lactis mutants in experimental fermented milk processing

Previously, we isolated two strains of spontaneous oxidative (SpOx2 and SpOx3) stress mutants of Lactococcus lactis subsp cremoris. Herein, we compared these mutants to a parental wild- type strain (J60011) and a commercial starter in experimental fermented milk production. Total solid contents of milk and fermentation temperature both affected the acidification profile of the spontaneous oxidative stress- resistant L. lactis mutants during fermented milk production. Fermentation times to pH 4.7 ranged from 6.40 h (J60011) to 9.36 h (SpOx2); V(max) values were inversely proportional to fermentation time. Bacterial counts increased to above 8.50 log(10) cfu/mL. The counts of viable SpOx3 mutants were higher than those of the parental wild strain in all treatments. All fermented milk products showed post-fermentation acidification after 24 h of storage at 4 degrees C; they remained stable after one week of storage.

Reducing problem behavior during care-giving in families of preschool-aged children with developmental disabilities

This study evaluated two variants of a behavioral parent training program known as Stepping Stones Triple P (SSTP) using 74 preschool-aged children with developmental disabilities. Families were randomly allocated to an enhanced parent training intervention that combined parenting skills and care-giving coping skills (SSTP-E), standard parent training intervention alone (SSTP-S) or waitlist control (WL) condition. At post-intervention, both programs were associated with lower levels of observed negative child behavior, reductions in the number of care-giving settings where children displayed problem behavior, and improved parental competence and satisfaction in the parenting role as compared with the waitlist condition. Gains attained at post-intervention were maintained at 1-year follow-up. Both interventions produced significant reductions in child problem behavior, with 67% of children in the SSTP-E and 77% of children in the SSTPS showing clinically reliable change from pre-intervention to follow-up. Parents reported a high level of satisfaction with both interventions.

Behavior Profile of Family Members of Donors and Nondonors of Organs

Organ transplant shortage is a global problem caused by several factors, most of which are related to members of the family, who play it major role in the donation process. Objective. We sought to determine the most determinant features in the donor profile that relate to positive decisions versus refusal of donation. Material and Methods. Fifty-six families who were approached by the Organ Procurement Organization (OPO) from November 2004 to April 2006 agreed to participate in this work. To assess donor profiles, we used it structured interview. Results. Parental involvement directly in decisions about donation lead to significantly less frequent consent (P = .005), young donor age was associated with a reduced probability of donation (P = .002), violent death negatively influenced donation consent, excluding suicide (P = .004). Conclusion. The present study showed violent death, young patient age, and parental donation consent to be the most important factors that make it harder to obtain consent organ donation. When a collateral relative (sibling/uncle) or children were responsible for the donation decision, there was more success of consent.