Assessment of fighting ability or simple habituation: What causes young pigs (Sus scrofa) to stop fighting?

To determine how pigs assess their relative fighting ability, I observed paired contests between young pigs that were either of similar weight or of different weight. On the first day the incidence of fighting was high, but this was not affected by the size of the weight difference. Fights between pigs of different weight were shorter than those between pigs of similar weight. When the pigs were of different weight, the eventual winner bit more frequently and spent more time attacking than did the eventual loser. This difference was not apparent when the pigs were of similar weight. On the first day, winners and losers were equally likely to initiate fights. The incidence of fighting was lower on the second day, although this was unaffected by the weight difference. Losers were less likely to initiate fights on the second day, and fights were shorter than on the first day. However, for the time that they did fight, the losers fought as vigorously (based on the rate of biting) on the second day as on the first. Seventy-two hours of visual and olfactory contact before the fight had no effect on the incidence of fighting and minimal effect on its duration. I suggest a young pig cannot assess its chance of success prior to the first encounter but only during the course of the fight. This assessment is reduced by attacks from the opponent until it drops below a critical threshold, whereupon the pig stops fighting. As a result of a previous defeat, a pig will lower its assessment and will be less likely to fight or to initiate fights on subsequent encounters. It is this change in assessment rather than habituation alone that makes pigs less likely to fight as they become acquainted.     

Good to Bad or Bad to Bad? What is the relationship between valence and the trait content of the Big Two?

In this article we directly assessed the relationship between valence and relevant traits of the Big Two dimensions (i.e., communion and agency). Drawing on previous research, we expected that the relationship with valence would be less monotonous and more variable in direction across agency-related traits, compared to communion-related traits. In three repeated measures studies we assessed the perceived valence of each trait dimension on a continuum of seven points. Studies 1 and 2 defined each continuum verbally. In Study 3 each continuum was defined by facial features. Results across these studies show that valence is linearly and more consistently related with communion-related traits than with agency-related traits. Within agency, however, competence established a positive linear relationship with valence, whereas dominance showed a target-sensitive relationship with valence: quadratic in evaluation of trait concepts, and negative and linear in face evaluation. We discuss the implications of these data for Big Two-related research.     

中国面孔中的人格知觉维度

要求中国被试基于对中国面孔图片的第一印象对图片中人物进行人格判断,运用主成分分析和平行分析的方法,探究面孔中的人格知觉维度。结果发现,中国被试知觉本族男性、女性面孔时存在“亲和性”和“能力”两个人格知觉维度。初步揭示了亲和性维度具有跨文化的共性,并提出更广义的能力维度,其内容包含支配性特质和坚韧性特质。     

Out of mind,out of sight? Investigating abnormal face scanning in autism spectrum disorder using gaze‐contingent paradigm

Diminished social motivation is hypothesized to explain abnormal face scanning pattern in individuals with autism spectrum disorder (ASD), especially reduced eye‐looking time in ASDs than typically developing (TD) people. Here, we tested an alternative explanation that children with ASD may use a compensatory strategy to avoid direct eye contact by processing the eyes through peripheral vision. We compared the face scanning patterns of children with and without ASD in two conditions: in the clear condition, the face was completely visible; in the blur condition, by using the gaze‐contingent paradigm, the whole face was blurred except for a small region being fixated at, thus children could not rely on the peripheral information to process the eyes. We found that children with ASD fixated less on the eyes than TD children in both conditions. Temporal‐course analyses further revealed the possible motivation‐based guidance of attention to process the eyes in the TD group but not in the ASD group. Additionally, we found that children with ASD scanned faces more randomly and less strategically than TD children. These results have ruled out the alternative hypothesis that the abnormal face scanning pattern in ASDs was due to their compensatory strategy to process eyes through peripheral vision, furthering our understanding of the mechanisms underlying their abnormal face scanning.     

Does culture shape face perception in autism? Cross‐cultural evidence of the own‐race advantage from the UK and Japan

Autism spectrum disorders (ASD) are associated with face perception atypicalities, and atypical experience with faces has been proposed as an underlying explanation. Studying the own‐race advantage (ORA) for face recognition can reveal the effect of experience on face perception in ASD, although the small number of studies in the area present mixed findings. This study probed the ORA in ASD by comparing two cultural groups simultaneously for the first time. Children with ASD in the UK (N = 16) and Japan (N = 26) were compared with age‐ and ability‐matched typically developing (TD) children in the UK (N = 16) and Japan (N = 26). Participants completed a two‐alternative forced‐choice task, whereby they had to recognize a just seen face from a foil which was manipulated in one of four ways (IC: identity change; EE: easy eyes; HE: hard eyes; HM: hard mouth). Face stimuli were Asian and Caucasian, and thus the same stimuli were own and other race depending on the cultural group. The ASD groups in the UK and Japan did not show impaired face recognition abilities, or impairments with recognizing faces depending on manipulations to the eye region, and importantly they showed an ORA. There was considerable heterogeneity in the presence of the ORA in ASD and TD and also across cultures. Children in Japan had higher accuracy than children in the UK, and TD children in Japan did not show an ORA. This cross‐cultural study challenges the view that atypical experiences with faces lead to a reduced/absent ORA in ASD.     

网约车场景中声誉和面孔可信度对女性信任判断的影响以及直觉性思维的调节作用

以58名女性为研究对象, 用网约车场景来考察声誉和面孔可信度对其信任判断的影响, 并探讨直觉性思维的调节作用。结果表明声誉和面孔可信度会影响女性在选乘网约车时的信任判断, 她们更愿意信任声誉良好和面孔可信度高的司机; 相比低直觉性思维女性而言, 声誉对高直觉性思维女性的信任判断影响较小, 而面孔可信度对高直觉女性的信任判断影响较大。     

Face averages and multiple images in a live matching task

We know from previous research that unfamiliar face matching (determining whether two simultaneously presented images show the same person or not) is very error-prone. A small number of studies in laboratory settings have shown that the use of multiple images or a face average, rather than a single image, can improve face matching performance. Here, we tested 1,999 participants using four-image arrays and face averages in two separate live matching tasks. Matching a single image to a live person resulted in numerous errors (79.9% accuracy across both experiments), and neither multiple images (82.4% accuracy) nor face averages (76.9% accuracy) improved performance. These results are important when considering possible alterations which could be made to photo-ID. Although multiple images and face averages have produced measurable improvements in performance in recent laboratory studies, they do not produce benefits in a real-world live face matching context.     

PDP再认型实验程序与刺激来源的可鉴别性研究

提出应根据实验程序的不同,把加工分离模型（ＰＤＰ）进一步分为启动型和再认型两类。２个实验考察了刺激来源的可 鉴别性在ＰＤＰ的再认型实验程序中的作用,同时还考察了注意水平、刺激材料和加工水平等因素对词单１刺激项目再认成绩的影 响。结果发现：熟悉感和刺激来源的可鉴别性共同决定了被试在排除测验中的反应;汉字作刺激材料并不影响实验结果。     

熟悉感来源:相异-归因假设述评

有关熟悉感的研究,近几年已经取得了进展。继Jacoby等在再认记忆研究中对熟悉感的产生得出的流畅启动假设后,Whittlesea等人通过大量的实验,从一个新的角度对熟悉感的产生进行了解释,提出了相异-归因假设。该文旨在对这一假设的主要观点、对元认知领域的重要意义及其存在的不足进行述评,以便进一步的探讨。     

单字词的学习年龄对小学生汉字识别的影响(Ⅱ)

以小学一、三、五年级的学生为被试 ,采用汉字命名任务 ,选取分别在小学语文课本中一、三、五年级出现的三组字 (分别记为A、B、C三组字 )为材料 ,考察了单字词的学习年龄 (LA)对小学生汉字识别时间的影响。结果表明 :无论年级间比较还是年级内比较 ,单字词的学习年龄 (LA)对小学生的汉字命名反应时和正确率都有显著影响。