触觉长度总合:应用复合变异刺激的实验

本文报道被动触觉的长度总合实验。在应用单一的标准刺激的条件下,在前臂内侧进行了单一的和各种复合的变异刺激的比较实验,所得到的结果没有显著差异。这与主动触觉和应用复合的标准刺激的实验结果相一致,表明长度总合是触觉的一种普遍现象。本文讨论了策略在长度总合中的作用与对长度辨别阈限的意义。     

不同性别比和童年经济状况对未婚男性性态度的影响

基于进化心理学的生命史理论,通过两个实验探讨性别比和童年经济状况同男性性态度间的关系。实验1和实验2分别采用图片和文字材料启动被试的性别比感知,结果发现感知性别比和童年经济状况对未婚男性的"随意性行为"态度表现出显著的交互效应：童年家庭经济状况差的未婚男性在感知到周围女性数量相对充裕的情境下,其性开放态度会较感知到周围男性数量充裕时明显上升;童年家庭富裕的男性的性开放态度在不同感知性别比下保持相对稳定。     

Dynamic changes in work/rest duty cycles in a study of sleep deprivation

The effects of moderate workload and 72 h of sleep deprivation were studied using a modified continuous-performance paradigm. Ten subjects were tested hourly on a number of perceptual and cognitive tasks designed to require approximately 30 min to complete, with the remainder of each hour free. As sleep deprivation continued, the average time on task increased at an accelerating rate. The rate of increase differed among tasks, with longer tasks showing greater absolute and relative increases than shorter ones. Such increases confound sleep deprivation and workload effects. In this paper, we compare the advantages and disadvantages of several experimental paradigms; describe details of the present design; and discuss methodological problems associated with separating the interactions of sleep deprivation, workload, and circadian variation with performance.     

Perceiving high social mindfulness during interpersonal interaction promotes cooperative behaviours

Social mindfulness refers to individual's respect and protection of others’ options in interpersonal interaction. The object‐choosing task is a traditional paradigm to assess social mindfulness. Individuals with high social mindfulness would choose the nonunique object so that others would have more options; on the contrary, individuals with low social mindfulness would choose the unique object, which limits others’ choices. No prior study has examined whether perceiving people with different levels of social mindfulness affects one's cooperation. Based on this background, two experiments were conducted to address this question. In both experiments, a confederate participant's (Player A's) social mindfulness was manipulated by setting the frequency that Player A chose the unique and the nonunique objects. Then, participants were asked to interact with Player A in the public goods game (Experiment 1) or in the centipede game (Experiment 2). Convergent results showed that compared to those interacting with a socially unmindful person, participants interacting with a person perceived as socially mindful contributed more resources in the public goods game and chose to pass on more rounds in the centipede game. These findings suggest that perception of others’ high social mindfulness enhances one's own cooperative behaviour.     

Pigeons play the percentages: computation of probability in a bird

The ability to compute probability, previously shown in nonverbal infants, apes, and monkeys, was examined in three experiments with pigeons. After responding to individually presented keys in an operant chamber that delivered reinforcement with varying probabilities, pigeons chose between these keys on probe trials. Pigeons strongly preferred a 75% reinforced key over a 25% reinforced key, even when the total number of reinforcers obtained on each key was equated. When both keys delivered 50% reinforcement, pigeons showed indifference between them, even though three times more reinforcers were obtained on one key than on the other. It is suggested that computation of probability may be common to many classes of animals and may be driven by the need to forage successfully for nutritional food items, mates, and areas with a low density of predators.     

Affective auditory stimulus database: An expanded version of the International Affective Digitized Sounds (IADS-E)

Using appropriate stimuli to evoke emotions is especially important for researching emotion. Psychologists have provided several standardized affective stimulus databases—such as the International Affective Picture System (IAPS) and the Nencki Affective Picture System (NAPS) as visual stimulus databases, as well as the International Affective Digitized Sounds (IADS) and the Montreal Affective Voices as auditory stimulus databases for emotional experiments. However, considering the limitations of the existing auditory stimulus database studies, research using auditory stimuli is relatively limited compared with the studies using visual stimuli. First, the number of sample sounds is limited, making it difficult to equate across emotional conditions and semantic categories. Second, some artificially created materials (music or human voice) may fail to accurately drive the intended emotional processes. Our principal aim was to expand existing auditory affective sample database to sufficiently cover natural sounds. We asked 207 participants to rate 935 sounds (including the sounds from the IADS-2) using the Self-Assessment Manikin (SAM) and three basic-emotion rating scales. The results showed that emotions in sounds can be distinguished on the affective rating scales, and the stability of the evaluations of sounds revealed that we have successfully provided a larger corpus of natural, emotionally evocative auditory stimuli, covering a wide range of semantic categories. Our expanded, standardized sound sample database may promote a wide range of research in auditory systems and the possible interactions with other sensory modalities, encouraging direct reliable comparisons of outcomes from different researchers in the field of psychology.     

信任还是设防？互动博弈中社会善念对合作行为的促进效应

社会善念是个体在人际互动中充满善意地关注、尊重并保护他人选择的需要和权利的行为,通过实施社会善念有助于提升他人的合作行为。为检验这一假设,本实验设置了“施—受”双方的互动博弈情境,采用“物品选择游戏”操纵实施者的社会善念水平,分别利用信任博弈和公共物品游戏测查接受者在互动过程中的信任水平和合作行为。结果发现：相比于低社会善念组,被试在高社会善念组中表现出更高的信任水平和合作行为。进一步路径分析也发现,信任在感知社会善念与合作行为间发挥着部分中介作用。由此可见,社会善念行为的实施为互动双方建立信任关系提供了重要线索,降低了人们时时“设防”的监控动机,使合作带来的利益双赢成为可能。     

Attention without awareness: Attentional modulation of perceptual grouping without awareness

Perceptual grouping is the process through which the perceptual system combines local stimuli into a more global perceptual unit. Previous studies have shown attention to be a modulatory factor for perceptual grouping. However, these studies mainly used explicit measurements, and, thus, whether attention can modulate perceptual grouping without awareness is still relatively unexplored. To clarify the relationship between attention and perceptual grouping, the present study aims to explore how attention interacts with perceptual grouping without awareness. The task was to judge the relative lengths of two centrally presented horizontal bars while a railway-shaped pattern defined by color similarity was presented in the background. Although the observers were unaware of the railway-shaped pattern, their line-length judgment was biased by that pattern, which induced a Ponzo illusion, indicating grouping without awareness. More importantly, an attentional modulatory effect without awareness was manifested as evident by the observer’s performance being more often biased when the railway-shaped pattern was formed by an attended color than when it was formed by an unattended one. Also, the attentional modulation effect was shown to be dynamic, being more pronounced with a short presentation time than a longer one. The results of the present study not only clarify the relationship between attention and perceptual grouping but also further contribute to our understanding of attention and awareness by corroborating the dissociation between attention and awareness.

     

准生命理论、准生命模型与生命波动论——与刘虹先生商榷

早在2003年,刘虹先生就提出了准生命理论.笔者在该理论基础上提出准生命模型以及生命波动理论.通过准生命模型把生命、准生命和死亡有机地联系到一起,再在该模型的基础之上提出生命波动理论,以阐释人生命状态在生命、准生命和死亡之间的变动,并为准生命理论中的某些难题提供一些解决思路.