Difference in Cortical Relay Time Between Intrinsic Muscles of Dominant and Nondominant Hands

The authors aimed to calculate and compare cortical relay time (CRT) between intrinsic hand muscles and between homonymous muscles of dominant and nondominant hands. The participants comprised 22 healthy volunteers. The CRT for long-latency reflexes (LLRs) was calculated by subtracting the peak latency of somatosensory evoked potentials of component N20 and the onset latency of motor evoked potentials from the onset latency of LLRs. CRT was significantly shorter for the first dorsal interosseous muscle than for the abductor pollicis brevis muscle, regardless of hand dominance. CRT for the abductor pollicis brevis muscle was significantly shorter in the dominant hand than in the nondominant hand. Evaluation of CRT for intrinsic muscles might be beneficial in the understanding of individuated finger functions.     

Positive effects of low intensity recorded maternal voice on physiologic reactions in premature infants

ObjectiveTo evaluate the effect of low intensity recorded maternal voice on the physiologic reactions of healthy premature infants in the neonatal intensive care unit (NICU).MethodsPhysiologic responses of 20 healthy preterm infants in the NICU of Shariati Hospital, Tehran, were obtained during a 15 min intervention including three 5 min periods (no-sound control, audio recorded playback of mother’s voice, no-sound post-voice). The intervention was presented three times a day for three consecutive days. During each intervention, oxygen saturation (%, OSPR), heart rate (HR), and respiratory rate (RR) were recorded at 1 min intervals over the 15 min and then averaged over each 5 min period, resulting in 3 averages for each variable for each intervention.ResultsRepeated Measures Analysis of Variance were employed to examine each variable separately. Over the three days, comparison of oxygen saturation over each of the three periods (before, during voice, after) revealed an increase in oxygen saturation during the voice period, compared to the pre-voice period, which persisted over the post-voice period; there were no differences between the voice and post-voice periods. Analyses of the HR and RR data showed a decrease in both variables during the voice period compared to the pre-voice period which persisted over the post-voice period. Again, there were no differences between the voice and post-voice periods.ConclusionExposure to low intensity recorded maternal voice has positive effects on the preterm infants ‘physiologic responses.     

Victim and peer group responses to different forms of aggression among primary school children

Both behaviourist and social learning theory emphasise the importance of the consequences of a behaviour on its subsequent frequency of occurrence [e.g., Bandura, 1973, 1977; Skinner, 1953]. Despite this, very little is known about the types of consequences children receive when they aggress towards other children. The present study employed a wireless microphone and hidden camera to record victim and peer responses to primary school children's physical, verbal, indirect, and relational forms of aggression. The results showed that the most frequent consequences of aggression were victim retaliation or withdrawal, and peer support. In addition, the results showed limited support for the suggestion that sex differences in the use of different types of aggression arise due to differential reinforcement from victims and/or peers. The implications of the results for the development of interventions aimed at reducing aggression are considered along with alternative explanations for sex differences in aggression. Aggr. Behav. 31:00–00, 2005. © 2005 Wiley‐Liss, Inc.     

儿童的内隐特质观与社交失败后反应的关系

以160名儿童为被试考察儿童内隐特质观与社交失败后反应的关系。结果表明:(1)随着年龄增长,儿童越来越积极地应对社交失败;(2)社交失败后,越赞同固存观儿童提出的积极群体加入策略比例越低而消极策略比例越高;越赞同发展观儿童提出的积极策略比例越高而消极策略比例越低;(3)持固存观儿童比持发展观儿童更倾向将社交失败归因于自己,自我评价也更为消极,但两者在社交坚持性、未来社交预期等方面无显著差异。     

Spontaneous response to and expressive regulation of mirth elicited by humorous cartoons in younger and older adults

Many studies have examined the effect of aging on the ability to regulate negative emotions but less is known about the way the elderly people control their positive affects. Thirty-eight younger and 38 older adults were compared on their affective, expressive, physiological, and behavioral spontaneous responses to and in expressive regulation of mirth elicited by humorous cartoons. Compared to younger adults, older adults were equally amused and aroused but showed lower expressivity in their spontaneous reaction. They were similarly successful in implementing expressive regulation but they had lower physiological activation under amplification condition and more gaze avoidance from the key areas of the cartoons under suppression condition. This indicates that in older, amplification skills are disjointed from the physiological responses and suppression skills seem supplanted by a less costly strategy of attention redeployment. This also suggests that older adults’ behavior is not driven by a greater preference for positive information.     

Simple discrimination training with differential responses to establish functional and equivalence classes with preschool children

The present study assessed whether simple discrimination training with differential responses would produce functional and equivalence classes with preschool children. In Experiment 1, we exposed 10 children to simple successive discrimination training in which they had to press different buttons (selection‐based responses). Response 1 (R1) was reinforced only in the presence of A1, B1, or C1, and Response 2 (R2) was reinforced only in the presence of A2, B2, or C2. We assessed the formation of functional classes by training new selection responses in the presence of one member of each class (A1‐R3, A2‐R4) and testing to see if these responses would occur in the presence of other members. Eight children responded consistently with functional class formation. Four of these eight children also responded consistently with the formation of equivalence classes. Experiment 2 investigated whether differential motor responses (i.e., gestures) would improve equivalence class yields. Three of six children showed both functional and equivalence class formation. In general, the results indicate that the simple discrimination procedure with differential responses yielded functional and equivalence class formation.     

高低创造性思维水平者的认知抑制能力：行为和生理的证据

本研究采用2个实验, 考察创造性思维测验得分高低者在Stroop任务干扰条件上的差异, 从行为和生理指标探讨认知抑制与创造性思维的关系, 以及时间压力对认知抑制与创造性思维关系的调节作用。实验1采用Stroop颜色命名任务。结果发现, 相比低创者, 高创者的反应时干扰效应量和正确率干扰效应量均更小。实验2采用更灵活的Stroop字义-颜色命名转换任务, 操纵不同的时间压力条件, 并记录被试完成任务时的皮肤电活动。结果发现, 高创者在有时间压力条件下的干扰效应量显著小于无时间压力条件下, 而低创者在有和无时间压力条件下的干扰效应量无显著差异; 高创者在颜色命名任务的不一致条件下的皮肤电活动变化显著高于一致条件, 而低创者在颜色命名任务的一致和不一致条件下无显著差异。研究表明：总体而言, 相比低创者, 高创者的认知抑制能力更高, 能够有效抑制优势的但不相关的反应倾向。时间压力在认知抑制与创造性思维的关系中起调节作用, 高创者面对不同任务要求能够灵活调整自身的认知抑制水平, 并表现出变化的生理唤醒水平。结果支持创造性思维的适应性认知抑制假说。     

心理治疗中的同化模型

同化模型是一个有关心理治疗改变过程的理论构想。它融合了多家理论观点, 形成一个用于解释心理治疗一般改变过程的整合性框架。依据此模型, 针对治疗改变过程提出八个可以预期的发展阶段。一系列有关同化模型的研究已经对模型及其发展序列进行了验证, 并提供了实证性的支持。同时发现不同疗法的同化过程模式存在差异; 不同疗法对处于不同同化阶段的当事人具有不同的效果。在研究主题的细化方面, 已有研究开展了同化阶段的标识研究、同化阶段的子阶段研究; 并拓展向不同障碍类型、不同治疗方法的当事人, 以及新的研究领域(如药物治疗, 移民丧失)。在未来的研究中, 可以进行跨文化的研究来对此模型进行验证, 也可以对模型有关治疗改变线性过程的潜在假设进行验证, 或针对声音方面展开深入研究。     

Paternalistic leadership and subordinate responses: Establishing a leadership model in Chinese organizations

Paternalistic leadership (PL) is the prevalent leadership style in Chinese business organizations. With an approach similar to patriarchy, PL entails an evident and powerful authority that shows consideration for subordinates with moral leadership. Although PL is widespread in Chinese business organizations, very few studies have focused on this leadership style and those that have were simply conceptual analyses and not empirical studies. We sampled 543 subordinates from local businesses in Taiwan to investigate PL, Western transformational leadership, and subordinate responses to these two leadership styles. Our hypotheses were as follows: (1) PL has a significant and unique effect on subordinate responses compared to Western transformational leadership; (2) there exists an interaction between the three elements of PL (benevolence, morality, and authoritarianism) and subordinate responses; and (3) the authority orientation of a subordinate's traditionality has a moderating effect upon the relation between PL and subordinate responses. Statistical analyses generally supported these hypotheses. Directions for follow-up studies are offered and implications for leadership theory and practice are discussed.     

The psychology behind the masks: Psychological responses to the severe acute respiratory syndrome outbreak in different regions

Severe acute respiratory syndrome (SARS) was first reported in China, and spread to 29 regions, affecting over 8000 people worldwide. For the general public, the psychological impact of SARS may have been greater than the physical health danger of the disease. The present paper proposes the influence of psychological factors on people's cognitive, affective, and behavioral responses during the SARS outbreak. The various papers in this special issue of the Journal reveal how people have reacted during the SARS outbreak: People's general coping styles may be related to their health behavior during the outbreak. Cultural differences were evident in the perception of SARS, and individuals' perceptual styles may have influenced their ability to cope with the outbreak. The way in which individuals coped with SARS-related stressful events was different from their usual practices of managing daily stress. Individual differences in the adoption of preventive measures were related to the distinct susceptibility to several social-cognitive biases.