Human interventions in a behavioural experiment for Asian Elephants (Elephas maximus)

Animal Cognition - Experiments are widely used to investigate the behaviour and cognition of animals. While the automation of experiments to avoid potential experimenter bias is sometimes possible,...     

少年赛中情绪影响运动成绩的研究

实验以46名少年为对象,以400m跑为内容,在被试者不知道的情况下,把他们分为鼓励(表扬)组和挫折(批评)组。预先测得他们400m跑的平时成绩,做为实验后被试自己与自己成绩比较的出发点。具体实验之前,告诉被试者,这次测验400m跑,既看“达标”如何?也看“技评”如何? 实验是在400m跑途中,于100m,200m,300m处各设数人为“技评”鉴别者。每两个人一起跑,一个人受“表扬”,一个人挨“批评”。 结果,接受积极刺激的少年,多数唤起增力情绪,并做出积极的反应,但也有少数人出现了减力情绪,做出消极的反应。而接受消极刺激者,正与此相反。 表扬比批评具有更大的动力性质,教师在教学中宜多用表扬,对少年的表扬与批评,要注意年龄与性别特点。     

对体操运动员自我时机控制能力某些因素的探讨

在跳台上,用自制“全圆弹性跳台开关”和记时器对国家体操少年优秀选手17人和儿童体操初学者20人的复制跳跃腾时的准确性、左右转体的均称性、复制腾时的迁移与干扰、运动节奏、快转90°和慢转90°的腾时时距和角度误差进行测定,根据公式: 慢转体腾时-快转体腾时(即时距)×(1-角误均数/100)=时空指数,求得每位被试的“时空指数”。以探讨体操运动员自我时机控制能力的某些因素中,哪些是潜在的,哪些是习得的,二者又如何协同发展。明确它,以便帮助运动员养成与发展自我时机控制能力问题。     

Are reporting errors due to encoding limitations or retrieval failure? Surveys of child vaccination as a case study

Surveys of childhood vaccinations are often highly inaccurate, due to parental misreporting. We conducted three experiments to examine the source of the inaccuracies. In Experiment 1, we provided parents with memory aids; these aids did little to improve reporting accuracy. Two further experiments asked whether parents forgot what they knew about their children's vaccinations, or whether they never knew the information. In Experiment 2 we surveyed parents both immediately and ten weeks after their child's medical visit. Accuracy was only slightly better than chance immediately afterwards; ten weeks later performance had not changed significantly. Experiment 3 compared reports in both recall and recognition conditions. Although the recognition condition lowered the response burden on parents it did not produce more accurate reports. We conclude that low levels of accuracy in parental reports on vaccinations appear to reflect poor initial encoding rather than retrieval failure. Copyright © 1999 John Wiley & Sons, Ltd.     

不同时相日光下颜色的恒常性

一、前言 在光源光谱成份改变的条件下,我们周围物体的颜色在眼睛看来保持相对不变,称为颜色恒常性。1807年Thomas Young首先描述了颜色恒常性现象,他指出室内不管是由蜡烛的黄光或火焰的红光来照明的,书页纸仍然看来是白色的。Young认为,外界某一表面的颜色外观,并不完全决定于网膜的红、绿、蓝三种感受器的吸收特性,而也依赖于周围其它物体射入眼睛的光通量。此后,E.Hering对颜色恒常性做了实验表演。一般认为颜色恒常性是对环境照明感受性的降低。视觉通道只传递由物体表面所反射的光谱成     

Violent obsessions are associated with suicidality in an OCD analog sample of college students

The picture of suicide in obsessive-compulsive disorder (OCD) is unclear because previous research did not uniformly control for depressive symptoms when examining the relationship between OCD and suicidality. Specific links between OC symptom dimensions and suicidality were also not adequately studied. As such, we investigated specific associations between OC symptom dimensions and suicidality, beyond the contribution of depressive symptoms, in an OCD analog sample of college students, a group traditionally at risk for suicide. One hundred and forty-six college students (103 females; 43 males) who exceeded the clinical cut-off for OC symptoms on the Obsessive-Compulsive Inventory, Revised (OCI-R) were recruited. Participants completed an online questionnaire containing measures that assessed suicidality and OC and depressive symptom severity. Total OC symptom severity, unacceptable thoughts, and especially violent obsessions exhibited significant positive zero-order correlations with suicidality. However, analyses of part correlations indicated that only violent obsessions had a significant unique association with suicidality after controlling for depressive symptoms. Our findings support the hypothesis that violent obsessions have a specific role in suicidality beyond the influence of depressive symptoms in an OCD analog sample of college students. A strong clinical focus on suicide risk assessment and safety planning in college students reporting violent obsessions is therefore warranted. Future related research should employ longitudinal or prospective designs and control for other possible comorbid symptoms in larger and more representative samples of participants formally diagnosed with OCD in order to verify the generalizability of our findings to these groups.     

The Perception of Ideal Best Friends by Chinese Adolescents

This study examines the characteristics of ideal best friends endorsed by Chinese adolescents. A comprehensive measure of person perception was used in order to assess those dimensions of personality where gender, similarity, and complementarity might be related to the rating of ideal best friends. Results indicated that ideal female best friends were rated higher on the communal dimension of Helpfulness; ideal male best friends were rated higher on the agentic dimensions of Extroversion, Assertiveness, and Application. Similarity effects were found for Openness to Experience, Extroversion, and Emotional Stability; complementarity effects for Assertiveness. These results were explained in terms of Chinese gender stereotypes and the requirements for harmonious dyadic interaction.     

THE VALUE ORIENTATIONS OF CHINESE UNIVERSITY STUDENTS IN HONG KONG

The Rokeach Value Survey was used to measure the value orientations of a large sample of 927 Chinese university students in Hong Kong. Based on their ranking of 18 terminal and 18 instrumental values, it was found that the students tended to put greater emphases on personal and competency oriented values. Specifically, the four most important terminal values were true friendship, happiness, self-respect, and wisdom; and the four least important terminal values were social recognition, a comfortable life, salvation, and pleasure. The four most important instrumental values included responsible, courageous, intellectual, and capable; and the four least important instrumental values included imaginative, polite, obedient, and clean. Male students tended to be more concerned with personal, accomplishment, and competency related values; whereas female students were more attracted to family, moral, and more intrinsic kinds of values. This study also provided evidence on the validity of the Rokeach Value Survey measure. It was shown that the values in the Rokeach measure correlated significantly with similar values in Scott's Personal Values Scale, another value measure with multi-item rating scales. L'Echelle des valeurs de Rokeach a été utilisée pour déterminer les orientations de valeur d'un vaste échantillon de 927 étudiants universitaires chinois de Hong Kong. En se basant sur leur mise en rangs de 18 valeurs terminales et de 18 valeurs instrumentales, il a été observé que les étudiants avaient tendance à mettre plus d'emphase sur les valeurs personnelles et les valeurs d'orientation vers la compétence. Plus particulièrement, les quatre valeurs terminales les plus importantes étaient la véritable amitié, le bonheur, le respect de soi, et la sagesse; les quatre valeurs terminales les moins importantes étaient la reconnaissance sociale, une vie confortable, le salut et le plaisir. Les quatre valeurs instrumentales les plus importantes étaient définies par les termes responsable, courageux, intellectuel et capable; les quatre valeurs instrumentales les moins importantes étaient définies par les termes imaginatif, poli, obéissant et propre. Les étudiants mâles avaient tendance à être davantage concernés par les valeurs reliées à la personne, à l'accomplissement et à la compétence; par ailleurs, les étudiantes étaient davantage attirées par la famille, la moralité et par des valeurs de nature plus intrinsèque. Cette étude a également constitué une épreuve expérimentalle de la validité des mesures provenant de l'Echelle des valeurs de Rokeach. Il a été démontré que les valeurs mesurées par l'Echelle de Rokeach étaient significativement corretees avec les valeurs semblables de l'Echelle des valeurs personnelles de Scott, une autre façon de mesurer des valeurs en utilisant des modalités d'évaluation comprenant plusieurs items.