Responses of urban crows to con- and hetero-specific alarm calls in predator and non-predator zoo enclosures

Urban animals and birds in particular are able to cope with diverse novel threats in a city environment such as avoiding novel, unfamiliar predators. Predator avoidance often includes alarm signals that can be used also by hetero-specifics, which is mainly the case in mixed-species flocks. It can also occur when species do not form flocks but co-occur together. In this study we tested whether urban crows use alarm calls of conspecifics and hetero-specifics (jackdaws, Corvus monedula) differently in a predator and a non-predator context with partly novel and unfamiliar zoo animal species. Birds were tested at the Tiergarten Schönbrunn in the city of Vienna by playing back con- and hetero-specific alarm calls and control stimuli (great tit song and no stimuli) at predator (wolf, polar bear) and non-predator (eland antelope and cranes, peccaries) enclosures. We recorded responses of crows as the percentage of birds flying away after hearing the playback (out of those present before the playback) and as the number of vocalizations given by the present birds. A significantly higher percentage of crows flew away after hearing either con- or hetero-specific alarm calls, but it did not significantly differ between the predator and the non-predator context. Crows treated jackdaw calls just as crow calls, indicating that they make proper use of hetero-specific alarm calls. Responding similarly in both contexts may suggest that the crows were uncertain about the threat a particular zoo animal represents and were generally cautious. In the predator context, however, a high percentage of crows also flew away upon hearing the great tit control song which suggests that they may still evaluate those species which occasionally killed crows as more dangerous and respond to any conspicuous sound.     

Multicultural Counseling Competencies: Lessons From Assessment

This article addresses multicultural counseling competencies from the perspective of quantitative assessment. A conceptual review of the current measures identifies 4 relevant issues: (a) diverse factor structures, (b) the working definition of multicultural awareness, (c) test takers' frame of reference, and (d) the implications of an inclusive definition of culture for assessment. Este artículo se dirige aconsejar las capacidades multiculturales de la perspectiva de la evaluación cuantitativa. La revisión conceptual de las medidas actuales identifica 4 asuntos pertinentes: (a) factor de estruturas diversas, (b) preparaciones de la definición del conocimiento multiculturales, (c) tomadores de examenes marco de referencia, y (d) las implicaciones de una definición inclusiva de la cultura para la evaluación.     

童年中期对抗行为的发展及其与同伴拒绝、同伴接纳的关系

采用教师报告法对1254名城市儿童的对抗行为发展进行追踪研究,并采用交叉滞后设计探讨了对抗行为与同伴拒绝/接纳间的关系.结果发现:(1)童年中期,对抗行为呈中等程度稳定性,并表现出随年龄下降的趋势;(2)男生的对抗行为水平显著高于女生;(3)交叉滞后分析发现,早期的同伴拒绝能显著正向预测后期的对抗行为,但早期同伴接纳不能预测后期的对抗行为;早期的对抗行为均能够显著预测后期的同伴拒绝以及同伴接纳.     

Effects of the Positive Action programme on problem behaviours in elementary school students: a matched-pair randomised control trial in Chicago

This study examined the effects of the Positive Action (PA) programme in Chicago Public Schools on problem behaviours among a cohort of elementary school students from grade three through grade five. Using a matched-pair, randomised control design with 14 elementary schools, approximately 510 fifth-graders self-reported lifetime substance use, serious violence-related behaviour, and current bullying and disruptive behaviours. Three-level (i.e. students nested within schools within school pairs) overdispersed Poisson models were used to examine programme effects on the number of items endorsed for each of the four outcomes. Findings indicated that students in the intervention endorsed 31% fewer substance use behaviours (incidence rate ratio [IRR] = 0.69), 37% fewer violence-related behaviours (IRR = 0.63) and 41% fewer bullying behaviours (IRR = 0.59), respectively, compared to students in the control schools. Reduction in reported disruptive behaviours was of a similar magnitude (27%, IRR = 0.73), but was not statistically significant. These results replicate findings of an earlier randomised trial of the PA programme and extend evidence of its effectiveness to youth attending large urban school systems.     

Changes in alcohol intake in response to transdiagnostic cognitive behaviour therapy for eating disorders

Objective

The aim of this study was to examine how alcohol intake changes during and after transdiagnostic cognitive behaviour therapy for eating disorders (CBT-E). Additionally, the paper considers the relationship between alcohol consumption, eating disorder diagnosis and current major depressive episode at the time of first assessment.

Method

One hundred and forty nine outpatients with an eating disorder (body mass index over 17.5) were divided into high or low alcohol intake groups (HIG and LIG) according to their intake at pre-treatment assessment. Their alcohol intake and eating disorder psychopathology were examined over the course of treatment and follow-up.

Results

There was no difference between the groups on response of the eating disorder to treatment. The HIG significantly reduced their alcohol intake following treatment whilst the intake of the LIG remained stable over the course of treatment and follow-up. There were no group differences in major depression and overall severity of eating disorder at baseline.

Conclusions

The response to CBT-E was not influenced by baseline level of alcohol use. The mean alcohol intake of the heavy drinking subjects decreased without being specifically addressed by the treatment.     

Cognitive control of a simple mental image in patients with obsessive--compulsive disorder

The nature of obsessions has led researchers to try to determine if the main problem in obsessive-compulsive disorder (OCD) is impaired inhibitory control. Previous studies report that the effort to suppress is one of the factors that increase the frequency of obsessive thoughts. Based on these results and those of the present study that suggest inferior parietal lobe (IPL) abnormality in OCD and findings of a recent study that reported the importance of the right posterior parietal cortex in cognitive control of a simple mental image, the present cognitive control paradigm study aimed to determine whether there is a difference in brain dynamics between OCD patients and non-obsessive controls while performing tasks that necessitate cognitive control of a simple mental image, and whether the right posterior parietal region is one of the regions in which a difference in activity between the OCD patients and controls would be observed. Functional brain imaging was performed while the participants attempted to suppress, imagine, or manipulate a mental image. The general linear model showed that there was a main effect of group and main effect of task. Accordingly, in all contrasts (suppression minus free-imagination, erasing minus free-imagination, and imagination minus free-imagination), the right IPL, right posterior cingulate cortex, and right superior frontal gyrus activity were lower in the OCD patients than in the healthy controls. These results and the observed correlations between activity levels, and symptom and subjective performance scores are discussed. In conclusion, the results of the present study and those of previous studies suggest that the main problem in OCD might be difficulty activating the right frontoparietal networks during tasks that require cognitive control, which might result in the intrusiveness of obsessive thoughts.     

Power fosters context-independent, analytic cognition

The present research tested the hypothesis that power, defined as the capacity to influence others, promotes analytic cognitive processing, by examining the use of linguistic categories and the categorization of objects. Supporting the hypothesis, recalling instances of influencing others facilitated the use of adjectives and discouraged the use of verbs to describe others (Study 1). Recalling instances of influencing others also promoted taxonomic, instead of thematic, categorization (Study 2). Furthermore, the authors also examined the effect of power in a real-life context. They examined whether socioeconomic status (SES) differences in cognitive processing can be partly explained by sense of agency, an antecedent of power (Study 3); high SES individuals made more taxonomic categorization than did low SES individuals, and a sense of agency partially mediated the SES differences in categorization. These findings underscore the role of power in shaping cognitive processes.     

行政人道德风险的经济分析

行政人是“经济人”的特殊形式,其“经济人”的本质属性及边际成本和边际收益的失衡是行政人道德风险产生的内在动因。要避免行政人道德风险的产生,就必须建构以“经济人”假设为逻辑起点,以边际成本和边际收益均衡相等、内控与外控相结合的防范机制。     

The Messianic Thought of the Rule of Law

Philosophia - The first segment starts with a definition of two dimensions of the concept of rule of law; related to the notion of sovereignty and as a concept to control arbitrariness on the part...     

Microaggressions and Sexual Risk Behaviors in Black College Women: A Moderated Mediation Analysis

The study examined the association between microaggressions and sexual risk behaviors, the mediating role of anxiety, and the moderation of this mediation by bicultural self‐efficacy. One hundred twenty‐six Black college women (mean age = 20.63) completed a survey. A moderated mediation analysis showed that anxiety partially mediated the relationship between microaggressions and sexual risk behaviors and that bicultural self‐efficacy did not significantly moderate the indirect relationship. Findings indicate the importance of microaggressions in psychological and physical health. El estudio examinó la asociación entre microagresiones y comportamientos sexuales de riesgo, el papel mediador de la ansiedad y la moderación de esta mediación la autoeficacia bicultural. Ciento veintiséis mujeres negras universitarias (media de edad = 20.63) completaron una encuesta. Un análisis de mediación moderada mostró que la ansiedad medió parcialmente la relación entre microagresiones y comportamientos sexuales de riesgo, y que la autoeficacia bicultural no moderó la relación indirecta de forma significativa. Los hallazgos indican la importancia de las microagresiones en la salud física y psicológica.