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LEE HARWOOD, Brighton July-October 1977  相似文献   

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BackgroundKinematic differences between females and males for the single leg squat (SLS) have been identified. However, kinetic differences between sexes and how variations of the non-stance leg position during the SLS may affect kinematics and kinetics differently in females and males have not been examined.ObjectivesExamine sex-specific kinematic and kinetic differences during the SLS task with 3 different non-stance leg positions.DesignControlled laboratory study, cross-sectional design.MethodsThirty-two healthy adults (16 females, 16 males) performed the 3 SLS tasks while data were collected using a motion capture system and force plates. At 60 degrees of knee flexion (60KF) and peak knee flexion (PKF), kinematics and joint moments were compared between sexes and SLS tasks using a linear regression analysis.ResultsFemales exhibited less ipsilateral trunk flexion (P < 0.001) and greater anterior pelvic tilt (P ≤ 0.021) and hip adduction (P < 0.001) than males across tasks at 60KF and PKF. Across tasks, females had a smaller knee flexion moment than males at PKF (P = 0.001). Females had a greater hip abduction moment during SLS-Front than SLS-Middle (P = 0.044) and SLS-Back (P = 0.003) at PKF, but males had similar hip abduction moments across tasks (P ≥ 0.299). At 60KF, males had a greater knee adduction moment during SLS-Front compared to the other tasks (P ≤ 0.019) while females had similar hip abduction moments across tasks (P ≥ 0.459).ConclusionAltering the non-stance leg position during the SLS affects the kinematics and kinetics of both females and males. The position of the non-stance leg can be modified for assessment and treatment purposes and should be reported in research.  相似文献   

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Although both aggressive (AGG) and deceitful behaviors (DEC) are symptoms of childhood conduct problems, few studies have examined common vs. specific etiological influences. Early intervention is encouraged for conduct problems and findings from genetically informative studies can suggest whether interventions should focus on conduct problems in general or groupings of conduct problems more specifically. Twin model-fitting analyses were conducted on same and different teacher ratings of AGG and DEC for 872 9-year old male twin pairs. Common genetic influences were found to underlie the susceptibility for both AGG and DEC. The same teacher ratings resulted in somewhat higher heritability estimates than different teacher ratings. Results also indicated stronger environmental effects for DEC as compared with AGG, with a significant shared environmental component for same teachers and a substantial non-shared environmental component for different teachers. Our data suggest that AGG and DEC share risk genes and environmental factors may differentiate these two types of conduct problems. Characterizing these specific environmental factors may be useful when developing interventions.  相似文献   

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Motor maps, seizures, and behaviour   总被引:1,自引:0,他引:1  
Atypically organised motor maps have been described in some people with epilepsy and we have modelled this in rats. Our goal is to more fully understand the mechanisms responsible for seizure-induced functional brain reorganisation and to reverse their effects. Here we present an overview of the relationship between neocortical motor maps, seizures, and interictal behaviour. To begin we summarise the observations of atypical motor maps with epilepsy and in animal models following experimentally induced seizures. Our novel experiments have established that motor map expansion is linked to a functional alteration of motor behaviour. Evidence for some of the putative brain mechanisms responsible for motor map size is discussed. Our successes reversing seizure-induced map expansion by two different methods are also briefly reviewed. Lastly, unanswered questions for possible future experimentation are posed.  相似文献   

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This essay discusses the issue of informed consent as it relates not only to physician duty but also to patient duty. The author is particularly concerned with the possibility of battery charges against the physician unless a clear patient duty is articulated. In summary, the author concludes that we can prevent doctors from being forced to commit battery in a way which allows them to make reasonable choices for their patients without being open to the charge of having committed battery. At the same time, we would not allow doctors to abuse this privelege.  相似文献   

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The intention of this study was to determine, by the use of the Semantic Differential, male and female attitudes toward obscene language and the frequency of usage in both groups. In order to accurately assess if the feminist movement has any bearing on these attitudes, a third group of subjects was involved, females who are active members of feminist organizations. The male and female profiles of attitudes toward all three obscene words used in this study (shit, fuck, and bastard) support previous research in that, overall, women were found to react more strongly to obscene language than men.  相似文献   

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In order to examine the association between sexual behavior and depressive affect among adolescents, 122 and 219 Israeli adolescents, in two separate studies, reported their romantic and sexual history, the quality of their relationships and level of depressive symptoms. Findings show that a higher level of sexual activity in short-term romantic relationships, which were low in intimacy and authenticity, was related to increased levels of depressive symptoms among females but not among males. In contrast, involvement in stable romantic relationships was not associated with increased depressive affect for either gender. Findings from a 3 month follow-up suggested that it may be that an increased level of depressive symptoms leads adolescent females to become more sexually involved in short romantic encounters.  相似文献   

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This article explores the ways in which framings drawn from post-structuralism can help to inform the understanding of guidance practices. In particular, it draws upon the later work of Foucault and Actor-Network Theory to question the centrality of the humanistic subject predominant within discourses of contemporary guidance and raise issues of power, identity and artefacts in guidance practices. Through these we suggest that guidance can be reframed as a socio-technical web of spatialised knowledge-building practices within wider actions at a distance in the ordering of the social.  相似文献   

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The delayed discrimination methodology has been used to demonstrate a high-fidelity nondecaying visual short-term memory (VSTM) for so-called preattentive basic features. In the current Study, I show that the nondecaying high VSTM precision is not restricted to basic features by using the same method to measure memory precision for gait direction and gender-stereotypical gait patterns from high-level point-light walkers. Nondecaying VSTM of direction was found for delays up to 9 s whereas memory for gender decayed. For both tasks, reaction times (RTs) increased with the delay, but only gender RT took longer when the two walkers faced different directions to the line of sight as compared to when they faced the same direction. The results may reflect differences between local and global processes, or an ecologically valid strategy where VSTM resources focus on variables that change, such as tracking people's movements, rather than variables that are constant during short timescales, such as gender. (PsycINFO Database Record (c) 2012 APA, all rights reserved).  相似文献   

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The present investigation examined body-size estimation and overvaluation of a thin shape in bulimic females, females having been obese as adults who later lost weight, females with no history of obesity who were dieting, and females with no history of obesity as adults and not currently dieting. Each subject was presented with a set of seven silhouettes, one having been drawn from the subject's actual photograph and the remaining silhouettes representing 2.5, 5, and 7.5% increases and decreases in the size of certain body areas of the original figure. Subjects selected both their actual size and their ideal size. In addition, objective raters selected an ideal size for each subject. The hypotheses that bulimics would overestimate their size or overvalue an ultrathin body size as compared with other females were not supported. A history of childhood obesity appears to influence significantly body-size overestimation. Finally, the hypothesis that bulimics would appear more dissatisfied with their body image was not supported, with the three groups currently dieting appearing equally dissatisfied with their shape.The authors greatly appreciate the assistance of the graphic artist, Susan Meier.  相似文献   

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Developmental psychopathology. Current research, issues, and directions   总被引:3,自引:0,他引:3  
Developmental psychopathology refers to the study of clinical dysfunction in the context of maturational and developmental processes. Although the field encompasses the entire life span, the present focus is on childhood. Special characteristics make the study of childhood dysfunction somewhat unique, including the emergence, evolution, and attenuation of seemingly problematic behaviors over the course of development; the manner in which children are referred for clinical evaluation; and complexities in identifying the appropriate foci for clinical intervention. Notwithstanding these obstacles, recent work has advanced considerably in diagnosis, assessment, and treatment of childhood disorders. The present article highlights recent advances in these areas and promising extensions in current research. Many advances have relied heavily on the extension of paradigms developed in research with adults. Additional research is needed that draws on and integrates conceptual and empirical work from developmental psychology.  相似文献   

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Facial feedback hypotheses: Evidence,implications, and directions   总被引:3,自引:0,他引:3  
This review evaluates four facial feedback hypotheses, each proposing a certain relation between the face and emotions. It addresses criticisms of the data, considers implications for emotional and social processes, and advises directions for future research. The current data support the following: Facial actions are sensitive to social context, yet correspond to the affective dimension of emotions; matches with specific emotions are unlikely. They modulate ongoing emotions, and initiate them. These two claims have received substantially improved support, in part due to studies controlling for effects of experimental demand and task difficulty. Facial action may influence the occurrence of specific emotions, not simply their valence and intensity. Facial action is not necessary for emotions. There are multiple and nonmutually exclusive plausible mechanisms for facial effects on emotions. Future work must focus on determining the relative contributions of these mechanisms, and the parameters of their effects on emotions.I appreciate the helpful comments of Harry Gollob, Greg McHugo, Catherine Reed, Craig Smith, and R. B. Zajonc on earlier drafts of this paper.  相似文献   

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Parental characteristics, ecological factors, and the academic achievement of African American male high school students were examined. One hundred fifty‐three 11th and 12th grade African American males completed the Parenting Style Index ( Steinberg, Lamborn, Darling, Mounts, & Dornbusch, 1994 ) and a demographic questionnaire. Results indicated no significant relationship between parenting styles and enrollment in honors courses. However, the results indicated that fathers’ education level and two‐parent family structures are positive predictors of grade point average (GPA), and fathers’ expectations is a negative predictor of GPA. Implications for counselor practice and research are delineated.  相似文献   

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男女两性在文化震荡、心理健康及其关系中的差异比较   总被引:4,自引:0,他引:4  
采用自编问卷对1555名30岁及以上被试受文化震荡的影响程度及其心理健康进行调查,分别探讨不同生活环境和环境相同但受教育程度不同的男女两性在两变量及其关系中的差异。结果表明:(1)总体上,男性报告的文化事件的主观影响明显比女性更积极,但其心理健康水平却明显低于女性;男女两性在文化震荡与心理健康之间均存在显著正相关,但具有不同特点。(2)不同生活环境和同一生活环境中不同受教育程度的男女两性在文化震荡、心理健康中均存在不同程度的差异;在这两变量间也均存在不同方面的显著正相关。  相似文献   

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Trust is a significant variable in children's personality, social, and intellectual development. Although trust research has primarily explored adult behavior, there is a growing body of research on children, with a particular emphasis on trust development within friendship relationships. This paper reviews the extant literature on children's trust. After summarizing historical theoretical perspectives, noting particularly Rotter's influence on the field, we offer a theoretical model of trust that synthesizes previous models. We describe various methods for assessing trust and argue for a multimethod approach consistent with our synthetic model. We review three research areas: antecedents to trust, the developmental course of trust in friendships, and correlates of trust. Implications for future research are indicated, and the absence of studies of practical applications is noted. Several programmatic applications for enhancing children's trust are presented.  相似文献   

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