真实型领导对教师知识分享行为的影响:组织支持感的中介和调节作用*

为了探讨真实型领导、组织支持感和教师知识分享行为的关系,对330个有效教师样本进行研究。结果发现:(1)真实型领导对教师的知识分享行为具有显著的预测作用(β=0.494,p<0.001)。(2)组织支持感在两者之间具有部分中介作用,间接效应占总效应的44.8%。(3)组织支持感在真实型领导的下属导向、领导特质、诚实不欺和正直无私与知识分享行为的关系中起调节作用,但在循规蹈矩与知识分享行为的关系中的调节作用不显著。     

The Role of Parental Mediation and Peer Norms on the Likelihood of Cyberbullying

ABSTRACT

Cyberbullying is a disturbing behavior associated with the use of communication technologies among adolescents. Many studies have been devoted to the activities of cyber victims as risk factors, while others have considered parental mediation a protective factor. However, there is a paucity of studies investigating the joint contribution of parental mediation, peer norms and risky online activities to the likelihood of being bullied on the Internet. To fill this gap, we conducted a study among a representative sample of 495 sixth to eleventh grade adolescents. We measured risky behavior online with items indicating the frequency of posting personal details, sending an insulting message and meeting face-to-face with a stranger met online. Respondents reported their perceptions about their peers. attitudes toward these risky online behaviors. We also measured three types of parental mediation: active guidance, restrictive supervision and non-intervention. Binary logistic regression findings show that risky online behaviors and peer norms regarding these behaviors had a significant effect, suggesting that the likelihood of being bullied on the Internet is associated with both risky behavior online and the norms prevalent within the adolescents. peer group. Restrictive supervision had a significant effect, implying that parents who feel their children are being bullied online may increase their oversight. The results emphasize the critical role of peers and the declining influence of parents in adolescence.     

Anticipation measures of sequence learning: manual versus oculomotor versions of the serial reaction time task

The serial reaction time (SRT) task has generated a very large amount of research. Nevertheless the debate continues as to the exact cognitive processes underlying implicit sequence learning. Thus, the first goal of this study is to elucidate the underlying cognitive processes enabling sequence acquisition. We therefore compared reaction time (RT) in sequence learning in a standard manual activated (MA) to that in an ocular activated (OA) version of the task, within a single experimental setting. The second goal is to use eye movement measures to compare anticipation, as an additional indication of sequence learning, between the two versions of the SRT. Performance of the group given the MA version of the task (n = 29) was compared with that of the group given the OA version (n = 30). The results showed that although overall, RT was faster for the OA group, the rate of sequence learning was similar to that of the MA group performing the standard version of the SRT. Because the stimulus-response association is automatic and exists prior to training in the OA task, the decreased reaction time in this version of the task reflects a purer measure of the sequence learning that occurs in the SRT task. The results of this study show that eye tracking anticipation can be measured directly and can serve as a direct measure of sequence learning. Finally, using the OA version of the SRT to study sequence learning presents a significant methodological contribution by making sequence learning studies possible among populations that struggle to perform manual responses.     

The effects of ordinal load on incidental temporal learning

How can we grasp the temporal structure of events? A few studies have indicated that representations of temporal structure are acquired when there is an intention to learn, but not when learning is incidental. Response-to-stimulus intervals, uncorrelated temporal structures, unpredictable ordinal information, and lack of metrical organization have been pointed out as key obstacles to incidental temporal learning, but the literature includes piecemeal demonstrations of learning under all these circumstances. We suggest that the unacknowledged effects of ordinal load may help reconcile these conflicting findings, ordinal load referring to the cost of identifying the sequence of events (e.g., tones, locations) where a temporal pattern is embedded. In a first experiment, we manipulated ordinal load into simple and complex levels. Participants learned ordinal-simple sequences, despite their uncorrelated temporal structure and lack of metrical organization. They did not learn ordinal-complex sequences, even though there were no response-to-stimulus intervals nor unpredictable ordinal information. In a second experiment, we probed learning of ordinal-complex sequences with strong metrical organization, and again there was no learning. We conclude that ordinal load is a key obstacle to incidental temporal learning. Further analyses showed that the effect of ordinal load is to mask the expression of temporal knowledge, rather than to prevent learning.     

亲子依恋与初中生亲社会行为:有调节的中介效应

亲社会行为是个体在人际交往中表现出的谦让、帮助、合作、分享等行为,是青少年社会能力发展的重要方面。以往研究表明,安全的亲子依恋对亲社会行为具有重要影响,但亲子依恋发挥作用的具体机制及作用条件还有待深入探讨。本研究在发展系统理论及依恋理论指导下,构建一个有调节的中介效应模型,检验心理资本在亲子依恋与亲社会行为之间的中介作用,以及不良同伴交往对上述中介路径的调节作用。采用亲子依恋问卷、心理资本问卷、不良同伴交往问卷以及亲社会行为问卷对737名初中生进行测查。结构方程模型分析表明:(1)在控制了年龄、性别和社会经济地位后,亲子依恋对亲社会行为具有显著的正向预测作用。(2)中介效应检验表明,心理资本在亲子依恋与亲社会行为之间具有完全中介作用。(3)有调节的中介效应检验进一步表明,不良同伴交往调节了"亲子依恋→心理资本→亲社会行为"的前半段,即当初中生的不良同伴交往偏多时,亲子依恋对心理资本的促进作用减弱。本研究的发现表明,安全的依恋关系有利于培养初中生的心理资本,进而促进亲社会行为。但是,较高的不良同伴交往会阻碍亲子依恋积极作用的发挥。本研究验证了家庭系统、同伴系统和个人系统对亲社会行为的联合作用,对初中生亲社会行为的培养具有一定的指导意义。     

Authenticity: a mediator in the relationship between attachment style and affective functioning

Attachment has been show to exhibit a strong effect on emotional well-being throughout an individual’s lifetime. This study examined individuals’ authenticity as a potential mediating variable in the relationship between insecure attachment and affective functioning. Authenticity was examined from multiple perspectives to better define its role as a mediating variable. Results showed that avoidant attachment is a predictor of affective functioning, and that authenticity acts as a mediating variable in this relationship. Anxious attachment showed no direct relationship with affective functioning, yet evidence was found for an indirect pathway from anxious attachment through authenticity on affective functioning. The differing results by attachment style support Mikulincer, Shaver, and Pereg’s theory suggesting a two-part model of emotional response style, wherein individuals with avoidant attachment deactivate emotion and individuals with anxious attachment show hyper-activation when coping with emotion. The study examines the construct of authenticity and its importance in affective functioning. Implications for therapists working with clients are made that highlight the importance of authentic relationships in therapy and life.     

Gender and health behaviours of hypertensive patients: mediating role of control beliefs

Previous studies have reported gender differences in patients’ health behaviours but few studied hypertensive patients. The potential underlying factors that may mediate gender influences on health behaviours is also a more critical area worthy of investigation. This study examined health locus of control (HLC) as a pathway of gender effects on health behaviours of hypertensive patients. The Multidimensional HLC Scale (Form C) and Wellness behaviour subscale of Health Behaviour Checklist were completed by 400 hypertensive outpatients in two Nigerian hospitals: Enugu State University Teaching Hospital, Park Lane, Enugu, and Bishop Shanahan Specialist Hospital, Nsukka. Hierarchical multiple regression results showed that gender significantly predicted health behaviours. Gender also significantly predicted internal HLC, chance HLC, and other people HLC, but did not predict doctor HLC. The association between gender and health behaviours was fully mediated by internal HLC, chance HLC and other people HLC. Understanding the explanatory mechanisms linking socio-demographic factors and health behaviours is considered of great importance for future research and healthcare intervention.     

Macaque monkeys discriminate pitch relationships

This study demonstrates that non-human primates can categorize the direction of the pitch change of tones in a sequence. Two Macaca fascicularis were trained in a positive-reinforcement behavioral paradigm in which they listened to sequences of a variable number of different acoustic items. The training of discriminating pitch direction was divided into three phases with increasing task complexity. In the first two phases, subjects learned to employ a same/different rule. In phase 1, they discriminated acoustic items of different sound quality. Subjects had to respond when there was a change from repeating noise bursts to repeating click trains or vice versa. In phase II, acoustic items differed along one physical dimension only. Subjects had to respond to a change of the frequency of a repeating series of pure tones. In phase III, sequences consisted of three series of repeating tones of different frequency. Subjects were required to respond when the frequency of the tones changed in a downward direction and to refrain from responding when the frequency remained constant or increased. After several ten thousand trials, subjects categorized pitch direction well above chance level. The discrimination was performed over a 4.5-octave range of frequencies and was largely independent of the temporal and ordinal position of the downward pitch direction within the sequence. These results demonstrate that monkeys can recognize pitch relationships and thus that monkeys have the concept of ordinal relations between acoustic items.     

Self-Perceived Competence as a Mediator Between Maternal Feedback and Depressive Symptoms in Adolescents

Self-report, other-report, clinical interview, and behavioral observations of evaluative maternal feedback (e.g., positive feedback, criticism), adolescent depressive symptoms, and self-perceived competence were obtained from 72 adolescents and their mothers. Most path analyses supported the hypothesis that adolescent self-perceived competence completely mediates the relation between negative maternal feedback and adolescent depressive symptoms, even after controlling for prior levels of depression. Consistent with Cole's competency-based model of depression (D. A. Cole, 1990), these results suggest that high levels of negative maternal feedback (coupled with low levels of positive feedback) are associated with adolescent negative self-perceptions, which in turn place adolescents at risk for depressive symptoms.