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.     

Dynamics of the relationships among work and family resource gain and loss,enrichment, and conflict over time

Dynamics of the relationships among work and family resource gain and loss, work-to-family enrichment (WFE), and work-to-family conflict (WFC) over time were examined using the data collected from 382 employees of Chinese firms at two points of time one year apart. Work resource gain at time 1 weakened the positive relationship between WFC at times 1 and 2, and work resource loss at time 1 weakened the positive relationship between WFE at times 1 and 2. However, WFC at time 1 strengthened the positive relationship between work resource gain at time 1 and family resource gain at time 2. Overall, these results suggest the existence of complementary forces that maintain the status quo of individuals' work–family experiences, such that high losses diminish the transfer of gains and high gains diminish the transfer of losses, but also that unexpected gains may result from individuals having to deal with painful situations. Implications of these dynamics for theory, research, and practice are discussed.     

Event‐related potentials reveal linguistic suppression effect but not enhancement effect on categorical perception of color

The present study used the event‐related potential technique to investigate the nature of linguistic effect on color perception. Four types of stimuli based on hue differences between a target color and a preceding color were used: zero hue step within‐category color (0‐WC); one hue step within‐category color (1‐WC); one hue step between‐category color (1‐BC); and two hue step between‐category color (2‐BC). The ERP results showed no significant effect of stimulus type in the 100‐200 ms time window. However, in the 200–350 ms time window, ERP responses to 1‐WC target color overlapped with that to 0‐WC target color for right visual field (RVF) but not left visual field (LVF) presentation. For the 1‐BC condition, ERP amplitudes were comparable in the two visual fields, both being significantly different from the 0‐WC condition. The 2‐BC condition showed the same pattern as the 1‐BC condition. These results suggest that the categorical perception of color in RVF is due to linguistic suppression on within‐category color discrimination but not between‐category color enhancement, and that the effect is independent of early perceptual processes.     

Depression in primary Sjögren’s syndrome: a systematic review and meta-analysis

There is substantial uncertainty regarding the prevalence of depression in Primary Sjögren’s syndrome (pSS). We conducted a systematic review aiming to evaluate the association of pSS with depression. PubMed, Web of Science, VIP, CNKI and Wanfang database were searched to find the published literatures (from these databases established to October 2016). Studies were screened according to inclusion and exclusion criteria and the qualities of included studies were evaluated. The data was analyzed using Revman5.2 software. A total of 12 studies including 1917 patients were eligible for inclusion in the systematic review and meta-analysis. In this meta-analysis, Severity of depression was assessed using psychometric measures, such as PHQ-9; HADS; CES-D; Zung depression scale and BDI. The result revealed that pSS was associated with an increased prevalence of depression (summary odds ratio (OR) = 5.36, 95% CI: 4.05–7.09, P < 0.01). The depression score in pSS patients (standardized mean difference (SMD) = 1.47, 95% CI: 0.81–2.12, P < 0.01) were higher than in the control group. Depression is highly prevalent in pSS than in healthy controls. Early recognition and appropriate intervention are therefore essential to reduce the negative impact of depression on the patient’s quality of life and outcome of their disease.     

Systemic lupus erythematosus is associated with negatively variable impacts on domains of sleep disturbances: a systematic review and meta-analysis

Sleep disturbances are common in systemic lupus erythematosus (SLE), but the features of sleep disturbances are not well understood. The aim of this study was to identify the impact of SLE on specific sleep quality domains and to determine its prevalence and associations. We performed a systematic review and meta-analysis to compare the sleep outcomes of individuals with SLE and healthy controls. PubMed, MEDLINE, EMBASE, Cochrane Library, Web of Science CNKI, VIP, CNKI and Wanfang database were searched to find the published literatures (from these databases established to May 2017). Studies were screened according to inclusion and exclusion criteria and the qualities of included studies were evaluated. The data was analyzed using Revman5.3 software. Score of the Pittsburgh Sleep Quality Index (PSQI) scoring system was used as the outcome measurement, and mean differences (MD) with 95% confidence intervals (CI) were calculated. Five studies were included, including 350 SLE and 1396 healthy controls. A total of 5 studies including 827 patients were eligible for inclusion in the systematic review and meta-analysis. In this meta-analysis, each domain of the PSQI score: subjective sleep quality (MD, .58; 95% CI, .26, .89), sleep latency(MD, .47; 95% CI, .21, .73), sleep duration (MD, .36; 95% CI, .13, .58), habitual sleep efficiency (MD, .58; 95% CI, .32, .84),sleep disorders (MD, .56; 95% CI, .34, .77), use of sleep medication (MD, .56; 95% CI, .33, .80), daytime dysfunction (MD, .57; 95% CI, .11, 1.04) and the global score (MD, 3.59; 95% CI, 1.37, 5.80) were higher in SLE women than healthy controls. Furthermore, subjective sleep quality and habitual sleep efficiency were most severely affected especially. It demonstrated that targeted interventions should be done to improve their sleep quality. Early recognition and appropriate intervention are essential to reduce the negative impact of sleep disturbances on the patient’s sleep quality and outcome of their disease.     

Parental Indulgence: Profiles and Relations to College Students’ Emotional and Behavioral Problems

Research on indulgent parenting and its relation to college students is both limited and inconsistent. Further, all the studies have used a variable-centered approach. To fill the gap in the current literature, the aims of this study were to explore profiles of parental indulgence and their associations with college students’ emotional and behavioral problems. The sample in this study consisted of college students from two universities. Participants were asked to take an online survey about their perceptions of their parents’ indulgent parenting practice and their own well-being. Results from latent profile analyses suggested distinct profiles of parental indulgence for mothers and fathers. Further, these profiles demonstrated differential associations with college students’ anxiety and depressive symptoms, emotional dysregulation, and alcohol use. Implications were also noted.     

Using eye movements to understand the leakage of information during Chinese reading

Psychonomic Bulletin & Review - How is attention allocated during reading? The present eye-movement experiment used a paradigm developed by Liu and Reichle (Psychological Science, 29,...     

Cortisol Reactivity as a Mediator of Peer Victimization on Child Internalizing and Externalizing Problems: The Role of Gender Differences

Research on Child and Adolescent Psychopathology - Children exposed to peer victimization are at increased risk for psychopathology. However, the physiological mechanisms linking peer victimization...     

Correction to: Intrapersonal and Interpersonal Sources of Resilience: Mechanisms of the Relationship Between Bullying Victimization and Mental Health Among Migrant Children in China

Applied Research in Quality of Life -     

用于情绪障碍研究的面部表情系统的初步建立

目的:建立一套情绪障碍研究用面部表情图片系统,为异常情绪的研究提供标准化刺激材料,增加情绪障碍研究的取材范围。方法:对85名被试拍摄喜悦、惊奇、轻蔑、厌恶、愤怒、恐惧、悲伤、平静、兴趣、羞愧、痛苦11种面部表情图片,拍摄强度分为强、中、弱三个等级,经过两次筛选,再由40名评定者对其进行类别、强度、愉悦度和优势度的判定。结果:获得一系列具有代表性的不同等级强度的8种面部表情图片520张,其中喜悦167张、惊奇78张、轻蔑67张、厌恶29张、愤怒46张、恐惧19张、悲伤65张、平静49张,每张图片都有其相应的一致率、强度、愉悦度和优势度分数。结论:面部表情图片系统为以后情绪障碍的研究提供了较好的标准化刺激材料;首次提供了轻蔑的表情图片;性别可能影响厌恶、恐惧表情的强度识别。