Overcoming intuition: metacognitive difficulty activates analytic reasoning

Humans appear to reason using two processing styles: System 1 processes that are quick, intuitive, and effortless and System 2 processes that are slow, analytical, and deliberate that occasionally correct the output of System 1. Four experiments suggest that System 2 processes are activated by metacognitive experiences of difficulty or disfluency during the process of reasoning. Incidental experiences of difficulty or disfluency--receiving information in a degraded font (Experiments 1 and 4), in difficult-to-read lettering (Experiment 2), or while furrowing one's brow (Experiment 3)--reduced the impact of heuristics and defaults in judgment (Experiments 1 and 3), reduced reliance on peripheral cues in persuasion (Experiment 2), and improved syllogistic reasoning (Experiment 4). Metacognitive experiences of difficulty or disfluency appear to serve as an alarm that activates analytic forms of reasoning that assess and sometimes correct the output of more intuitive forms of reasoning.     

The maintenance of key pecking by stimulus-contingent and response-independent food presentation

Three naive pigeons were exposed to a series of two-component multiple schedules of response-independent food presentation. The component schedules were sometimes identical (non-differential procedures) and sometimes different (differential procedures). High rates of key pecking were maintained in all the differential procedures, and pecking decreased substantially in non-differential procedures, even when the frequency of food presentation in non-differential procedures was higher than in differential procedures. It is suggested that the high rates of key pecking were maintained not by adventitious response-reinforcer contingencies, but by differential contingencies between the stimulus (keylight) and food. The role of such contingencies in the phenomenon of behavioral contrast is discussed.     

温度与攻击的研究回顾与展望

从人类攻击的一般理论模型出发,着重介绍了与温度有关的注意不足模型、社会公平模型、负面情绪矫正模型,阐述了热假说的有关研究和成果。最后分析了该研究领域存在的主要问题：(1)研究结果常相互矛盾,有的支持高温增加攻击行为,有的支持高温减少攻击行为。(2)实验室中的攻击与现实生活中的攻击有很大区别。(3)现场研究的数据中热效应与冷效应缺少对称。(4)目前学者的解释和研究未全面考察影响攻击行为的因素,因此需要综合探讨各种影响因素及它们的交互作用,并采用多种方法进行研究。     

Automated Portable Test (APT) System: Overview and prospects

The Automated Portable Test (APT) System is a notebook-sized, computer-based, human-performance and subjective-status assessment system. It is now being used in a wide range of environmental studies (e.g., simulator aftereffects, flight tests, drug effects, and hypoxia). Three questionnaires and 15 performance tests have been implemented, and the adaptation of 30 more tests is underway or is planned. The APT System is easily transportable, is inexpensive, and has the breadth of expansion options required for field and laboratory applications. The APT System is a powerful and expandable tool for human assessment in remote and unusual environments.     

Testing Two Theoretical Explanations for the Attraction-Enhancing Effects of Self-Disclosure

The study investigated the differential ability of similarity theory and social exchange theory to predict the effects of self-disclosure in a counseling versus a friendship encounter The participants were 80 undergraduates. A 2 (counseling or friendship) × 2 (positive or negative disclosure) × 2 (relevant or irrelevant disclosure) design was used in which participants rated the videotaped self-disclosure of an individual in an initial dyadic encounter. Unequivocal support was not obtained for either of the theories, but relationship context (counselor vs. peer) influenced the effects of disclosure as measured on counselor-peer and relationship characteristics. A unique feature of the study was the use of the Client Reactions System (CRS) to measure participants' immediate reactions to self-disclosure. The CRS demonstrated both relationship context and valence of disclosure (positive or negative) effects.     

Probabilistic single function dual process theory and logic programming as approaches to non-monotonicity in human vs. artificial reasoning

In this paper, it is argued that single function dual process theory is a more credible psychological account of non-monotonicity in human conditional reasoning than recent attempts to apply logic programming (LP) approaches in artificial intelligence to these data. LP is introduced and among other critiques, it is argued that it is psychologically unrealistic in a similar way to hash coding in the classicism vs. connectionism debate. Second, it is argued that causal Bayes nets provide a framework for modelling probabilistic conditional inference in System 2 that can deal with patterns of inference LP cannot. Third, we offer some speculations on how the cognitive system may avoid problems for System 1 identified by Fodor in 1983. We conclude that while many problems remain, the probabilistic single function dual processing theory is to be preferred over LP as an account of the non-monotonicity of human reasoning.     

Complexity and the Value of Lives—some philosophical dangers for mentally handicapped people

ABSTRACT In his book The End of Life James Rachels argues that in a situation of forced choice if we must choose between a more and a less complex human being we have good reason to choose in favour of the normal human. He argues also that since some humans have less complex mental abilities than some animals it will sometimes be right to choose a non-human animal in preference to a human being.
I do not consider Rachels'belief that sometimes non-human animals are to be preferred to retarded humans; I focus rather on the seemingly less contentious belief that in situations of forced choice, we should choose human beings with more rather than less complex lives. I reject this contention both because Rachels does not seem to have offered a worthwhile argument in its favour and also because I find his cavalier approach to the lives of people with intellectual disabilities morally offensive. En route I argue against his simplistic separation of human lives into the categories 'simple'and 'complex'on the basis of whether the individuals in question fall into what he seems to take as given—the clear cut categories 'mentally retarded'and 'normal'[1] [2].     

Attribution of blame in rape cases: A review of the impact of rape myth acceptance,gender role conformity and substance use on victim blaming

This article reviews research literature examining the effects of key factors that influence individual's attitudes towards victims of rape. The impact of rape myths, gender roles and substance use on attributions of blame in cases of rape are discussed. The phenomenon of victim-blaming within such cases is explored with reference to the attribution theory to help explain why rape victims are sometimes seen as deserving of their misfortune. Findings indicate that men demonstrate higher rape myth acceptance than women and attribute higher levels of blame to victims than women; women who violate traditional gender roles are attributed more blame than those women who do not; and women who consume alcohol prior to their attack are attributed higher levels of blame than those who are not intoxicated. The findings are discussed with reference to the implications for the Criminal Justice System and future interventions for both victims and perpetrators of rape.     

The placebo puzzle: putting together the pieces.

This article outlines and assesses the main theories of the placebo effect and suggests how they might sit together in a larger model of placebo etiology. Among the approaches considered are expectancy theory, emotional change theory, classical conditioning, and the biological approach. Although these are sometimes assumed to be competing models, in many cases they shed light on different pans of the placebo puzzle. Expectancies are the core of most placebo effects in human beings. The effects of expectancies are sometimes unmediated but in other cases are mediated by changes in emotional state, immune system function, perception, or behavior. Although expectancies are implicated in most placebo effects, a small number of placebo effects may be solely attributable to nonconscious contingency learning.     

Differential effects of instructions and consequences on human conditional discrimination performance

Two studies evaluated the differential behavioral effects of instructions and feedback in matching-to-sample procedures. In Experiment 1, 20 college students received true or false instructions and trial-by-trial or delayed feedback in three phases. In a fourth, final phase the instructions remained the same, but feedback changed from trial-by-trial to delayed, or from delayed to trial-by-trial. In Experiment 2, half of another 20 participants received true instructions during three phases, followed by false instruction in a fourth phase; the other half of the participants received false instructions during three phases, followed by true instructions in the fourth phase. Feedback sequences were as in Experiment 1. The results of both experiments revealed historical effects of instructions and feedback. Most participants demonstrated strong instructional control, overriding the control by contingencies. These results suggest that the present procedure offers optimal possibilities to make the differential effects of instructions and feedback on human behavior clearly identifiable when conditional discrimination tasks are used.     

Crowding and stress: 1. Review of variables and theories

Recent empirical research has sometimes failed to support the existence of a direct causal link between human crowding, as measured by objective density indices, and stress effects. It has even been proposed that high density merely intensifies reactions due to other causes, thereby casting basic doubt on the reality of crowding-induced stress. Conceptual issues in crowding research are discussed, and an attempt is made to resolve definitional problems. Theories of crowding are reviewed, suggesting that any plausible theory of crowding effects must take seriously the cognitive mediation of environmental variables, plus the operation of a complex set of personal and interpersonal processes which will determine whether and when high densityis likely to result in stress. These considerations cast doubt on the generalizability of that research which has failed to demonstrate crowding stress effects, and highlight the need for an integration of existing theories, so that predictions of the circumstances where crowding stress is most likely can eventually be made with greater precision.     

Return of fear in a human differential conditioning paradigm caused by a return to the original acquistion context

In a differential human fear conditioning paradigm evidence for ABA-renewal was obtained manipulating the lighting in the experimental room. During acquisition in either a dark or illuminated room, one neutral slide was sometimes paired with a loud aversive noise whereas another slide was not. Subsequently, extinction took place in the opposite lighting context. When afterwards the participants were tested again in the original acquisition context, measurements revealed a recovery of the conditioned electrodermal response and an increase in the retrospective verbal US-expectancy ratings. No response recovery was obtained in an AAA-group that received acquisition, extinction and test trials in one and the same context. Several theoretical explanations for this type of return of fear as well as implications for clinical practice are discussed.     

Temporal discrimination and a free-operant psychophysical procedure.

Pigeons were presented a series of keylight time periods (separated by blackouts) during which two response keys were lit, one by blue light and the other either by orange or green. Blue-key responses changed the color on the other key. Orange-key responses sometimes produced food during the first half of a time period; green-key responses sometimes produced food during the second half. In three experiments, the probability of a green-key response increased as a function of elapsed time. Experiment 1 compared performance when the duration of the keylight periods was varied across a wide range. Discrimination of performance was similar across the range of durations. Experiment 2 varied both relative reinforcement rate and the local reinforcement rate for orange-key and green-key responses. These manipulations produced changes in response bias but not discrimination sensitivity. Experiment 3 varied the local temporal placement of reinforcers within time periods and demonstrated that choice behavior was affected by differential reinforcement at different points during the time periods. The results were consistent with previous research on duration discrimination that used psychophysical trials procedures.     

Effects of outcome feedback on perception of dispositional and situational control in motor skill performance

This experiment investigated the effects of outcome feedback and the type of situation on perception of dispositional and situational control over motor skill performance. The experimental design was a 2 × 2 × 2 (type of situation × past outcome × present outcome) factorial. The subject competed with an opponent (a confederate) on ten pretest and ten test trials of a motor maze task. The results showed that both past and present success enhanced perception of dispositional control in terms of personal ability whereas failure (past and present) facilitated perception of situational control in terms of the opponent's ability. The type of situation had negligible influence on the subject's control perception of their motor performance. The results were viewed as having important implications for studying the effects of social reinforcement and outcome feedback on motor performance and thus for understanding why outcome feedback sometimes increases and sometimes decreases motor performance.     

Effects of spacing repetitions on children's memory

Two experiments examined the effect of spacing repetitions within a word list on the free recall performance of elementary school children. In the first experiment, spacing repetitions facilitated recall, and the function relating recall of repeated items to the spacing between repetitions was the same throughout the age range investigated (first, third, and sixth graders). But, the function for these elementary school children reached asymptote at a much shorter spacing than the function typically reported for adults. The second experiment was designed to test an encoding variability explanation of spaced-repetition effects in elementary school children. Results for both third- and sixth-grade children were consistent with the hypothesis that differential encoding of repetitions facilitates performance and that spaced repetitions are remembered better because they are more likely to be differentially encoded. A theoretical framework was discussed that may be able to encompass both these results and another finding in the literature which indicates that differential encoding can sometimes impair rather than facilitate children's memory performance.     

Generalization gradients in human predictive learning: Effects of discrimination training and within-subjects testing

Generalization gradients have been investigated widely in animal conditioning experiments, but much less so in human predictive learning tasks. Here, we apply the experimental design of a recent study on conditioned fear generalization in humans (Lissek et al., 2008) to a predictive learning task, and examine the effects of a number of relevant procedural parameters drawn from the generalization literature in animal conditioning. Experiment 1 shows that prior discrimination learning and steady-state testing procedures sharpen the gradient; Experiment 2 shows that within-subjects testing of the range of generalization stimuli also sharpens the gradient. In addition, Experiment 2 shows that, in case of very flat initial generalization, an orderly gradient can reveal itself through differential rates of extinction learning. Finally, Experiment 2 also evidenced an orderly gradient of generalization-of-extinction. These results suggest that discrimination processes have an important effect on the generalization of predictive learning in humans, and highlight behavioral analogies between animal conditioning and human predictive learning.     

论孟子哲学及其贡献

孟子认为,仁义价值等是人的本性。价值是人的标志。它具有首先性、主体性。诚是善良的人性本体的现实化。可是性善说显然无法自圆其说。这便是人性悖论。义内说表明,陈述同样具有主体性。主体对对象的把握方式是推恩。推恩是一种感应方式。被感应的对象,有时候被称为神。     

In two minds: dual-process accounts of reasoning

Researchers in thinking and reasoning have proposed recently that there are two distinct cognitive systems underlying reasoning. System 1 is old in evolutionary terms and shared with other animals: it comprises a set of autonomous subsystems that include both innate input modules and domain-specific knowledge acquired by a domain-general learning mechanism. System 2 is evolutionarily recent and distinctively human: it permits abstract reasoning and hypothetical thinking, but is constrained by working memory capacity and correlated with measures of general intelligence. These theories essentially posit two minds in one brain with a range of experimental psychological evidence showing that the two systems compete for control of our inferences and actions.     

Contributions of visual and embodied expertise to body perception

Recent research has demonstrated that our perception of the human body differs from that of inanimate objects. This study investigated whether the visual perception of the human body differs from that of other animate bodies and, if so, whether that difference could be attributed to visual experience and/or embodied experience. To dissociate differential effects of these two types of expertise, inversion effects (recognition of inverted stimuli is slower and less accurate than recognition of upright stimuli) were compared for two types of bodies in postures that varied in typicality: humans in human postures (human-typical), humans in dog postures (human-atypical), dogs in dog postures (dog-typical), and dogs in human postures (dog-atypical). Inversion disrupts global configural processing. Relative changes in the size and presence of inversion effects reflect changes in visual processing. Both visual and embodiment expertise predict larger inversion effects for human over dog postures because we see humans more and we have experience producing human postures. However, our design that crosses body type and typicality leads to distinct predictions for visual and embodied experience. Visual expertise predicts an interaction between typicality and orientation: greater inversion effects should be found for typical over atypical postures regardless of body type. Alternatively, embodiment expertise predicts a body, typicality, and orientation interaction: larger inversion effects should be found for all human postures but only for atypical dog postures because humans can map their bodily experience onto these postures. Accuracy data supported embodiment expertise with the three-way interaction. However, response-time data supported contributions of visual expertise with larger inversion effects for typical over atypical postures. Thus, both types of expertise affect the visual perception of bodies.