Relationships among motor skill,perceived self-competence,fitness, and physical activity in young adults

PurposeThis large-scale, exploratory study sought to examine the associations between motor skill proficiency (MSP), perceived self-competence (PC), physical fitness (PF), and self-reported physical activity (PA) to assess the assumption that relationships among these variables found in childhood and adolescence persist into young-adulthood. Specifically, predictors of PF and PA were assessed. Additionally, the contributions body mass index (BMI) and gender made to these relationships, as well as that of process- versus product-oriented motor skills data, were studied. Finally, how these relationships differed by gender was explored.MethodsParticipants’ (n = 448) MSP was assessed using select measures from the TGMD-2 and the BOT-2, while PF was evaluated using the FitnessGram. Participants also completed surveys to assess PC (SPPCS), PA (past-week MAQ), and demographic information. Height and weight were collected to calculate BMI.ResultsModels predicting physical fitness had good fit to the observed data, with perceived athletic competence, locomotor skill, upper-limb coordination, BMI, and gender accounting for about 75% (R² = 0.748) of aerobic PF variance and about 48% (R² = 0.476) of variance in push-up performances. About 18% (R² = 0.178) of variance in curl-up performances was predicted by perceived athletic competence, locomotor skill, upper-limb coordination, and PA. The PA model demonstrated weaker predictive power, with only about 10% (R² = 0.097) of variance explained. When considering male and female models separately, female models demonstrated better fit when predicting all PF and PA outcome variables. BMI and gender operated as significant predictors to differing degrees across the various models.ConclusionsThere is compelling evidence to believe relationships found among MSP, PC, PF, and PA in childhood and adolescence also exist in early adulthood. However, differences in the roles of gender and physical fitness versus physical activity are likely to exist.     

基于一般线性模型框架的心理统计教学

心理统计学教学中,不同的统计方法常常是独立教学,致使学生不易理解各种方法之间的关系。事实上,t检验、方差分析和多元线性回归等方法都可以统一到一般线性模型的框架下,而结构方程是对这个框架的最一般化的描述,且结构方程路径图是呈现这个框架的形象工具。因此,本文尝试用路径图的方式来呈现心理学研究中最常用的统计方法,并将结构方程分析结果与传统分析结果进行对照,帮助学生建立一般线性模型上位概念,将以往孤立的统计方法联系起来。     

Functional ear (a)symmetry in brainstem neural activity relevant to encoding of voice pitch: a precursor for hemispheric specialization?

Pitch processing is lateralized to the right hemisphere; linguistic pitch is further mediated by left cortical areas. This experiment investigates whether ear asymmetries vary in brainstem representation of pitch depending on linguistic status. Brainstem frequency-following responses (FFRs) were elicited by monaural stimulation of the left and right ear of 15 native speakers of Mandarin Chinese using two synthetic speech stimuli that differ in linguistic status of tone. One represented a native lexical tone (Tone 2: T2); the other, T2′, a nonnative variant in which the pitch contour was a mirror image of T2 with the same starting and ending frequencies. Two 40-ms portions of f₀ contours were selected in order to compare two regions (R1, early; R2 late) differing in pitch acceleration rate and perceptual saliency. In R2, linguistic status effects revealed that T2 exhibited a larger degree of FFR rightward ear asymmetry as reflected in f₀ amplitude relative to T2′. Relative to midline (ear asymmetry = 0), the only ear asymmetry reaching significance was that favoring left ear stimulation elicited by T2′. By left- and right-ear stimulation separately, FFRs elicited by T2 were larger than T2′ in the right ear only. Within T2′, FFRs elicited by the earlier region were larger than the later in both ears. Within T2, no significant differences in FFRS were observed between regions in either ear. Collectively, these findings support the idea that origins of cortical processing preferences for perceptually-salient portions of pitch are rooted in early, preattentive stages of processing in the brainstem.     

和谐精神:人文奥运的基本精神

在"更快、更高、更强"的奥运主旋律中,内涵着厚重的人文精神。这种人文精神又可以归结为以心和、人和、天和为特征和指向的"和谐精神"。"人文奥运"是2008年北京奥运会三大理念中的核心和灵魂,而人文奥运的灵魂就是和谐精神。和谐、合力、和衷共济、和而不同的"和谐精神"是人文奥运的基本精神,和谐是奥林匹克与中华文明的最佳结合点。     

The relationship between dynamic strain aging and serrated flow behaviour in magnesium alloy

The relationship between dynamic strain ageing (DSA) and serrated flow has been investigated via alternately switching strain rates at various temperatures in a Mg–3Nd–1Zn alloy. The results reveal that serrated flow is enhanced with decreasing strain rate and increasing temperature and tends to vanish, while the DSA continually intensifies as revealed by a higher flow stress even after the serration flow disappears. A mechanism is proposed, which could explain some abnormal deformation behaviour, such as a negative strain rate sensitivity and thermal hardening.     

Competing roles for the subfactors of need for closure in committing the fundamental attribution error

Webster’s (1993) finding that the need for closure (NFC) trait predicts the fundamental attribution error (FAE) is well-cited but has mixed support. After detailing failed replications and contradictory findings, this article reports an attempt to verify the positive NFC–FAE relation using the questioner–contestant paradigm. Rarely investigated but potentially vital to the field, this research also considered the two orthogonal subfactors of NFC, decisiveness and need for structure (Neuberg, Judice, & West, 1997). Results showed that need for structure predicted, overall NFC partially predicted, but decisiveness attenuated the FAE. Thus, Webster’s finding was both replicated and reversed by different aspects of NFC. Decisiveness adds to a short list of trait moderators of the FAE. Implications are discussed for how to measure NFC.     

Vocal Features of Conversational Sarcasm: A Comparison of Methods

This study investigated vocal cues that differentiate sarcastic utterances from non-sarcastic utterances. Utterances were drawn from videotapes of participant interviews and arranged on a master tape for analysis. Utterances that were identified as sarcastic by speakers and recognized as sarcastic by listeners were randomly arranged with utterances identified and recognized as non-sarcastic by the same participants. Both sarcastic and non-sarcastic utterances were analyzed by two methods–acoustic analysis and perceptual coding. The acoustic analysis proved slightly more successful than the perceptual coding in discriminating between sarcastic and non-sarcastic utterances. The acoustic analysis indicated that fundamental frequency, frequency range, length of utterance, and total amount of sound significantly discriminated sarcastic from non-sarcastic utterances. The perceptual coding method revealed that pitch range, length of utterance, and total amount of sound significantly discriminated sarcastic from non-sarcastic utterances. Moderate correlations were found between the acoustic and perceptual variables.     

La Justice Procédurale comme Variable Prévisionnelle de la Motivation Intrinsèque au Travail

Although the importance of intrinsic motivation at work is already known, the relationship between organizational justice and employees’ motivation remains unexplored. Consequently, the purpose of the present study was to examine the predictive role of organizational justice on intrinsic motivation and the mediation effect of fundamental needs satisfaction in the study of organizational justice and employees’ intrinsic motivation. Key variables have been measured with a sample of 273 workers coming from numerous fields of work. Correlational analyses and multiples regression analyses have been conducted and have shown a significant positive relationship between the variables as well as a partial mediation effect of the basic psychological needs’ satisfaction in the relationship between procedural justice and intrinsic motivation. Results show significant positive relations between the three variables of interest and a partial mediation of the basic needs in the relation existing between procedural justice and intrinsic motivation. The role of justice for the development of intrinsic motivation at work is discussed.     

When the “U” is not Inverted: Trajectories of Expressed Emotional Arousal Predict Relationship Satisfaction

Maladaptive emotional reactivity and dysfunctional communication during couple conflict are both destructive to couple functioning, and observational research has elucidated how conflict escalates. However, much of the evidence is based on measures that combine content (i.e., what was said) and the emotion with which it was said, which are then examined using sequential analyses. Despite the general presumptions about underlying emotional reactivity and escalation in negative emotions as part of relationship distress and deterioration, little empirical data are available that directly examine these continuous shifts in emotions. The current study examined concurrent and longitudinal associations between relationship satisfaction and trajectories of change in vocally expressed emotional arousal during couple conflict in 62 couples who participated in a relationship education program. Contrary to expectations and patterns found in distressed couples, trajectories followed a U‐shape rather than an inverted U‐shape curve, with steeper and more persistent decreases in emotional arousal predicting more stable relationship satisfaction over time. In addition, there were within‐couple effects. These results suggest that early signs for relationship deterioration may be less in the form of overt escalation as would be seen in distressed couples. Instead, couples who subsequently deteriorate more are less effective in calming emotional arousal. They also are less able to remain at lower emotional arousal. It is possible that the more pronounced escalation toward the end of the conversation in more at‐risk couples is a precursor of the greater escalation patterns seen in distressed couples; this should be examined empirically. Limitations and implications are discussed.     

L’affaire Lambert et ses enjeux constitutionnels

Despite a great number of legal analyses concerning the Vincent Lambert Case, only few of them adopt a constitutional point of view. This lack questions the relevance of Constitutional Law to protect rights and liberties. That is particularly true concerning the matter of the end of life. The right to life and the patient's right to consent (and refuse) to a medical treatment are not specifically enshrined by French constitution, (set aside the simple right to live freely). Therefore, this legal vagueness may lead to various interpretations of the fundamental law, which could promote rights and liberties as a tool protecting one's life, as well as it may recognize a real right to die.