Male vocal competition is dynamic and strongly affected by social contexts in music frogs

Male–male vocal competition in anuran species is critical for mating success; however, it is also highly time-consuming, energetically demanding and likely to increase predation risks. Thus, we hypothesized that changes in the social context would cause male vocal competition to change in real time in order to minimize the costs and maximize the benefits of competition. To test this hypothesis, we assessed the effect of repeating playbacks of either white noise (WN) or male advertisement calls on male call production in the Emei music frog (Babina daunchina), a species in which males build mud-retuse burrows and call from within these nests. Previous studies have shown that calls produced from inside burrows are highly sexually attractive (HSA) to females while those produced outside nests are of low sexual attractiveness (LSA). Results showed that most subjects called responsively after the end of WN playbacks but before the onset of conspecific call stimuli although call numbers were similar, indicating that while males adjusted competitive patterns according to the biological significance of signals, their competitive motivation did not change. Furthermore, these data indicate that the frogs had evolved the ability of interval timing. Moreover, when the inter-stimulus interval (ISI) between playbacks was varied, the subjects preferentially competed with HSA calls when the ISI was short (<4 s) but responded equally to HSA and LSA calls if the ISI was long (≥4 s), suggesting that males allocate competitive efforts depending on both the perceived sexual attractiveness of rivals and the time available for calling. Notably, approximately two-thirds of male calls occurred in response to HSA calls, a preference rate comparable to that previously found for females in phonotaxis experiments and consistent with the idea that the mechanisms underlying both the male’s competitive responses to rivals and the female’s preferences toward potential mates coevolved under the same selective pressure.     

Randomized single-blind multicenter trial comparing the effects of standard and augmented acupuncture protocols on sleep quality and depressive symptoms in patients with depression

The study was aimed to compare the effects of standard and augmented acupuncture on depressive symptoms and sleep disturbances in patients with depression. This is a randomized, single-blind, multicenter trial. 140 subjects with clinical insomnia (score of ≥ 7 on the Pittsburgh Sleep Quality Index (PSQI)) were randomized to the standard (LI4, LIV3, EX-HN3, and GV20) or augmented (LI4, LIV3, EX-HN3, GV20, LU7, and KID6, including intradermal needles for sustained treatment) acupuncture groups. Participants received two sessions weekly for six weeks. In trial, The primary outcomes were improvements in PSQI and the Hamilton Rating Scale (HAMD). Secondary outcomes were treatment credibility and adverse events. Outcomes were assessed at baseline, week 3, end of treatment, and 4-week follow-up. From the 105 randomized patients, 89 completed the trial and were included in the final analyses. Better efficacy was observed in the augmented group compared with the standard acupuncture to improve the PSQI and HAMD at week 3, end of treatment, and 4-week follow-up (all p < .05). The HAMD scores improved with time, except between end of treatment and 4-week follow-up, while in the standard group, HAMD scored improved from baseline to week 3, and stopped improving thereafter. The PSQI scores improved with time in the two groups, except between end of treatment and 4-week follow-up. Compared with the standard protocol, the augmented acupuncture protocol had a better efficacy to treat depression and to improve sleep quality of patients with depression.     

Approximated Penalized Maximum Likelihood for Exploratory Factor Analysis: An Orthogonal Case

The problem of penalized maximum likelihood (PML) for an exploratory factor analysis (EFA) model is studied in this paper. An EFA model is typically estimated using maximum likelihood and then the estimated loading matrix is rotated to obtain a sparse representation. Penalized maximum likelihood simultaneously fits the EFA model and produces a sparse loading matrix. To overcome some of the computational drawbacks of PML, an approximation to PML is proposed in this paper. It is further applied to an empirical dataset for illustration. A simulation study shows that the approximation naturally produces a sparse loading matrix and more accurately estimates the factor loadings and the covariance matrix, in the sense of having a lower mean squared error than factor rotations, under various conditions.     

权力对压力应对行为倾向的影响：认知评估的中介作用

摘 要 采用实验法探讨权力对压力应对行为的影响以及认知评估在二者关系中的作用。实验一通过回忆法操纵权力,测量被试在压力情境下的认知评估和行为倾向。结果发现,权力水平影响压力下的生理反应,高权力者产生挑战,低权力者产生威胁;认知评估在权力和压力应对行为倾向间起中介作用。实验二进一步探究了权力对压力应对行为的影响,结果发现认知评估中介权力和压力应对行为倾向,且不同权力水平者的压力应对行为存在显著差异。     

身体动作趋势对道德词空间-效价一致性效应的影响

在经典的空间—效价一致性范式的基础上,控制向上或向下看的动作趋向及幅度大小,探讨身体动作趋势对空间—效价一致性效应的影响。实验一分别在屏幕上方视野或下方视野进行词汇道德效价的判断。结果表明,在屏幕的上方视野和屏幕的下方视野不道德词汇都出现了空间—效价一致性效应,而道德词汇只在下方视野出现了一致性效应。实验二将注视点居于屏幕中央,改变词汇上下位置之间垂直距离的大小。发现在小间距条件下出现了显著的一致性效应,但是在大间距条件下一致性效应消失。综合两个实验表明,道德词的空间—效价一致性效应同时受到概念隐喻和极性相关的影响,当空间极性不明显时,概念隐喻的影响较大,而空间位置极性较明显时,空间位置极性会掩盖概念隐喻的作用。     

Hue distinctiveness overrides category in determining performance in multiple object tracking

The visual distinctiveness between targets and distractors can significantly facilitate performance in multiple object tracking (MOT), in which color is a feature that has been commonly used. However, the processing of color can be more than “visual.” Color is continuous in chromaticity, while it is commonly grouped into discrete categories (e.g., red, green). Evidence from color perception suggested that color categories may have a unique role in visual tasks independent of its chromatic appearance. Previous MOT studies have not examined the effect of chromatic and categorical distinctiveness on tracking separately. The current study aimed to reveal how chromatic (hue) and categorical distinctiveness of color between the targets and distractors affects tracking performance. With four experiments, we showed that tracking performance was largely facilitated by the increasing hue distance between the target set and the distractor set, suggesting that perceptual grouping was formed based on hue distinctiveness to aid tracking. However, we found no color categorical effect, because tracking performance was not significantly different when the targets and distractors were from the same or different categories. It was concluded that the chromatic distinctiveness of color overrides category in determining tracking performance, suggesting a dominant role of perceptual feature in MOT.     

Self-Efficacy and Problem Behaviors of School Bully Victims: Evidence from Rural China

Although the preventive role of self-efficacy for school bully has been well established, less is known as with the association between self-efficacy and problem behaviors adoption among children who are already school bully victims. In this cross-sectional study, we examined the clustered nature of problem behaviors among school bully victims and tested problem behavior clusters’ association with self-efficacy using latent class analysis and multinomial logistic regression. Participants included 262 Chinese rural students who were recognized as being regularly bullied while without bullying behaviors in school in the past 3 months (60.1% male, age range 12–16). We found that the victims could be categorized into three different groups according to their problem behaviors pattern, namely the “externalizing and internalizing behaviors” group, the “internalizing behaviors” group, and the “less-affected” group. After controlling for the covariates (i.e., gender, age, living arrangement, and relationship quality with father and mother), we found that higher self-efficacy indicated higher probability of falling into the group with relatively less negative influence from school bullying. We also found that gender, living arrangement, and relationship quality with mother were associated with bully victims’ problem behaviors pattern. The comorbidity between and within childhood externalizing and internalizing behaviors and self-efficacy’s association with different problem behavior patterns were discussed. The future research should test the causality between self-efficacy and problem behaviors of bully victims, as well as the effectiveness of self-efficacy enhancement intervention for victims adopting different problem behavior patterns.     

The significance of <Emphasis Type="Italic">Xuwu</Emphasis> 虚无 (Nothingness) in Chinese aesthetics

Just as nothingness is a fundamental concept in Daoist philosophy, it is also a fundamental concept in Chinese aesthetics, where it has multiple meanings: First, nothingness, as a reaction against unaesthetic psychical activity, is a primary precondition of aesthetic and artistic activity. Second, as the void or intangible “stuff” juxtaposed to “substance,” it is an indispensable compositional property of artworks as well as an essential condition for the manifestation of an artistic form. Finally, as a reaction against the unaesthetic world of daily life—the experiential world—nothingness is the fundamental basis and essential provision for establishing an artistic world.     

患者隐私权的民法保护——兼评《侵权责任法》第六十二条

<侵权责任法>将隐私权作为人格权加以确认,而第六十二条却仅规定医疗机构及其医务人员对患者个人隐私信息的保密义务,对于患者隐私权的保护略显不足.对患者隐私权的保护还包括,医疗机构及其医务人员未经患者同意不得侵入、窥视患者的私人领域.医疗活动通常不涉及患者私人活动的保护,精神科治疗是一个例外,医疗机构及其医务人员不得对精神障碍者与诊疗疾病无关的个人活动加以干涉、监视.     

浅谈对慢性前列腺炎的认识与思考

慢性前列腺炎是中青年男性常见疾病,其病因和发病机制尚未明确,诊断标准和治疗方法仍存在不少缺陷。当前须不断提高对慢性前列腺炎的认识,改进和细化分类方法,并重视对慢性前列腺炎患者的心理治疗,从而提高治疗效果。