5 resultados para PARENTAL HORMONE-LEVELS

em Brock University, Canada


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Parenting goals are the behavioral, cognitive, and affective outcomes that parents implicitly or explicitly strive to achieve during specific interactions with their children. In the present study, intergenerational parenting practices and goals in Italian-Canadian and Anglo-Canadian families were examined. The association between parenting goals, parents' socialization practices, and the quality of relationship between parent and child were investigated. Participants included individuals ranging in age from 1 8-26 years and their mothers from Anglo-Canadian (n= 31) and Italian-Canadian families (n= 50). The young adults and their mothers were asked to imagine how their respective parents would have reacted to five hypothetical vignettes depicting difficult parent-child interactions. Young adults and their mothers were also asked to rate the importance of parenting goals within these parent-child situations. In addition, young adults assessed the perceived quality of their present relationships with each parent. Cultural differences were revealed such that Italian-Canadian parents endorsed more authoritarian parenting strategies and relationship-centered goals than Anglo-Canadian parents. However, Italian-Canadian and Anglo-Canadian parents were not found to differ on their endorsement of parent-centered goals. Italian-Canadian parents' who did use authoritarian strategies were found to have young-adult children who perceived their relationship with their parents as less satisfying, intimate, affectionate and having relatively high levels of conflict than parents who did not use authoritarian strategies. Anglo-Canadian parents' authoritative strategies were correlated with a better perceived relationship quality by young-adult children.

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This study explored the impact of training parents and children concurrently in principled negotiation skills for the purpose of developing negotiation skills and problem solving abilities in children. A second experimental group was utilized to determine the viability of negotiation skills training of junior elementary students for the purpose of improving problem solving and conflict resolving abilities. The student population in each experimental group was trained using The Program for Young Negotiators (Curhan, 1996). A control group was also established using the remaining grade four and five students attending the participating school. These students did not receive training as part of this study. Student group distribution was as follows: Experimental group 1 (students with parent participant) consisted of 10 (5 grade five and 5 grade 4 students), Experimental group 2 students without parent participant) consisted of 48 (20 grade 4 and 28 grade 5 students), and the Control group 3 (55 grade 4 and 5 students). The impact of training was measured using the Five Factor Negotiation Scale developed for use with the Program for Young Negotiators (Curhan, 1996). This measure was employed as a pre- and post-test questionnaire to the total student population, (113 students) to determine levels of ability in each of the key elements of negotiation, personal initiative, collaboration, communication, conflict based perspective taking, and conflict resolution approach (Nakkula & Nikitopoulos, unpublished). This measure has a coefficient alpha of .75 which is acceptable for this type of affective instrument. As well, open ended ability questions designed to measure ability, knowledge, and behaviour as they relate to negotiation skill application were given to the total student population, (113 students). Finally, journals were maintained by the students in both experimental groups, and informal feedback discussions were held with students and parents participating in the study.The intent of using both qualitative and quantitative measures was to provide an overall perspective of student abilities as they related to principled negotiation skills. While the quantitative measures were from the student perspective, more qualitative information was sought from parents and teachers through informal interviews, discussions, and use of confidential feedback cards. For analysis purposes, the ability questions were randomly selected for Experimental group 2 and Control group 3 in an effort to balance the groups more equitably with Experimental group 1. The findings of this study indicate that students of the junior elementary school age can be taught how to perceive conflict in a more constructive way. However, they are not as likely to use their skills when the conflict is with a sibling as they are with a peer, a teacher, or a parent. While no statistically significant differences between mean scores for Experimental groups 1 and 2 exist some subtle differences are noted. Overall, increases in mean scores for grade 4 students exceeded the increases for grade 5 students within Experimental group 1 . The implication being that younger students benefit more from having a parent trained in principled negoUation skills than older students. The skill level of a parent in principled negotiation can not be underesUmated. Without a consistent and effective role model the likelihood of developing student skill level to a point of automaticity is greatly reduced. Enough so that perhaps the emphasis should be placed on training parents more so than the students.

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The purpose of this study was to determine the extent to which gender differences exist in student attitudes toward mathematics and in their performance in mathematics at the Grade Seven and Eight level. The study also questioned how parents influence the attitudes of this grade level of male and female students toward mathematics. Historically, the literature has demonstrated gender differences in the attitudes of students toward mathematics, and in parental support for classroom performance in mathematics. This study was an attempt to examine these differences at one senior public school in the Peel Board of Education. One hundred three Grade Seven and Eight students at a middle school in the Peel Board of Education volunteered to take part in a survey that examined their attitudes toward mathematics, their perceptions of their parents' attitudes toward mathematics and support for good performance in the mathematics classroom, parental expectations for education and future career choices. Gender differences related to performance levels in the mathematics classroom were examined using Pearson contingency analyses. Items from the survey that showed significant differences involved confidence in mathematics and confidence in writing mathematics tests, as well as a belief in the ability to work on mathematics problems. Male students in both the high and low performance groups demonstrated higher levels of confidence than the females in those groups. Female students, however, indicated interest in careers that would require training and knowledge of higher mathematics. Some of the reasons given to explain the gender differences in confidence levels included socialization pressures on females, peer acceptance, and attribution of success. Perceived parental support showed no significant differences across gender groups or performance levels. Possible explanations dealt with the family structure of the participants in the study. Studies that, in the past, have demonstrated gender differences in confidence levels were supported by this study, and discussed in detail. Studies that reported on differences in parental support for student performance, based on the gender of the parent, were not confirmed by this study, and reasons for this were also discussed. The implications for the classroom include: 1) build on the female students' strengths that will allow them to enjoy their experiences in mathematics; 2) stop using the boys as a comparison group; and 3) make students more aware of the need to continue studying mathematics to ensure a wider choice of future careers.

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Parental monitoring has long been stressed as an important parenting practice in reducing adolescent susceptibility to depression. An extensive review by Stattin and Kerr (2000), however, , revealed that researchers had confounded perceptions of parental monitoring (i.e., parental solicitation and control) with parental knowledge, and neglected to consider the role of adolescent willingness to disclose. In the present study, adolescents (N = 1995; 51.3% female) were surveyed at two time points (grade 10 and 11). To disentangle the role of perceived parenting, three central issues were addressed. First, the present study examined whether parental knowledge, adolescent disclosure, and parental monitoring (i.e., parental solicitation and control) in grade 10 predicted adolescent depression in grade 11. Second, the predictive value of adolescent depression in grade lOon parental knowledge, adolescent disclosure, parental solicitation and parental control in grade 11 was considered. Lastly, associations among parental knowledge, adolescent disclosure, parental solicitation and parental control were examined over time. Findings indicated that higher levels of parental knowledge were associated with subsequent lower levels of depressive symptoms, and that depressive symptoms predicted lower levels of parental knowledge over time. Both adolescent willingness to disclose and parental control predicted higher parental knowledge. These findings underscore the role of adolescent and perceived parent contributions to parental knowledge, and highlight the importance of perceived parental knowledge in predicting reduced adolescent susceptibility to depression.

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Systemic Acquired Resistance (SAR) is a type of plant systemic resistance occurring against a broad spectrum of pathogens. It can be activated in response to pathogen infection in the model plant Arabidopsis thaliana and many agriculturally important crops. Upon SAR activation, the infected plant undergoes transcriptional reprogramming, marked by the induction of a battery of defense genes, including Pathogenesis-related (PR) genes. Activation of the PR-1 gene serves as a molecular marker for the deployment of SAR. The accumulation of a defense hormone, salicylic acid (SA) is crucial for the infected plant to mount SAR. Increased cellular levels of SA lead to the downstream activation of the PR-1 gene, triggered by the combined action of the Non-expressor of Pathogenesis-related Gene 1 (NPR1) protein and the TGA II-clade transcription factor (namely TGA2). Despite the importance of SA, its receptor has remained elusive for decades. In this study, we demonstrated that in Arabidopsis the NPR1 protein is a receptor for SA. SA physically binds to the C-terminal transactivation domain of NPR1. The two cysteines (Cys521 and Cys529), which are important for NPR1’s coactivator function, within this transactivation domain are critical for the binding of SA to NPR1. The interaction between SA and NPR1 requires a transition metal, copper, as a cofactor. Our results also suggested a conformational change in NPR1 upon SA binding, releasing the C-terminal transactivation domain from the N-terminal autoinhibitory BTB/POZ domain. These results advance our understanding of the plant immune function, specifically related to the molecular mechanisms underlying SAR. The discovery of NPR1 as a SA receptor enables future chemical screening for small molecules that activate plant immune responses through their interaction with NPR1 or NPR1-like proteins in commercially important plants. This will help in identifying the next generation of non-biocidal pesticides.