The exact vs. approximate distinction in numerical cognition may not be exact, but only approximate: How different processes work together in multi-digit addition

Two types of calculation processes have been distinguished in the literature: approximate processes are supposed to rely heavily on the non-verbal quantity system, whereas exact processes are assumed to crucially involve the verbal system. These two calculation processes were commonly distinguished by manipulation of two factors in addition problems: the identity of the target and the distance of the distractor. However, in all previous studies, these two factors were not manipulated independently. In this fMRI study, we could disentangle the two factors by using a different (two-digit) number stimulus set. Both behavioral and neurofunctional data suggest that the cognitive processes involved could be best explained by the (independent) factors target and distractor distance. Based on these data we suggest that the exact/approximate distinction does not seem to be as generally valid as previously assumed. We conclude that this study may be a starting point for a closer examination of the experimental, procedural and strategic conditions of when the exact/approximate distinction is valid and when it is not.     

Speaker–listener incompatibility: Joint and separate processing in risky choice framing

Framing effects are considered in a conversational framework using the well-known Asian Disease problem [Tversky, A., & Kahneman, D. (1981). The framing of decisions and the psychology of choice. Science, 211, 453–458]. Speakers’ preferred message framing is examined and its corresponding persuasiveness is assessed using listeners’ responses. The results show that speakers exhibit a marked and consistent preference for positive over negative framing (Experiment 1). Judged from listeners’ responses, this preference is effective for promoting riskless, but not risky options. The incompatibility between speakers and listeners may be resolved by noting that speakers can jointly (i.e., comparatively) assess the information and the persuasive qualities of alternative frames. In contrast, listeners are exposed only to one of these frames and, consequently, can only assess the information separately (i.e., non-comparatively). Experiments 2 and 3 demonstrate that no incompatibility exists when both speakers and listeners are either in separate, or in joint evaluation mode. Differences between risky choice and attribute framing [Levin, I.P., Schneider, S.L., & Gaeth, G.J. (1998). All frames are not created equal: a typology and critical analysis of framing effects. Organizational Behavior and Human Decision Processes, 76, 149–188] are briefly discussed.     

信息哲学与未来中国科技哲学的基础

The research programme of the philosophy of information (PI) proposed in 2002 made it an independent area or discipline in philosophical research. The scientific concept of ‘information’ is formally accepted in philosophical inquiry. Hence a new and tool-driven philosophical discipline of PI with its interdisciplinary nature has been established. Philosophy of information is an ‘orientative’ rather than ‘cognitive’ philosophy. When PI is under consideration in the history of Western philosophy, it can be regarded as a shift of large tradition. There are three large traditions at large, known as Platonic, Kantian and Leibniz-Russellian. In the discussion of the position of the possible worlds, we have modal Platonism and modal realism, but both of the theories are made in the framework of Western philosophy. In this essay, it is argued that possible worlds could be seen as worlds in information, which is then an interpretation of modal information theory (MIT). Our interpretation is made on the basis of Leibniz’s lifelong connection with China, a fact often overlooked by the Western philosophers. Possible world theory was influenced by the Neo-Confucianism flourishing since the Song Dynasty of China, the foundation of which is Yijing. It could be argued that Leibniz’s possible world theory was formulated in respect to the impact of the thoughts reflected in Yijing, in that one of the prominent features is the model-theoretic construction of theories. There are two approaches to theory construction, i.e., axiom-theoretic and model-theoretic. The origin of the former is from ancient Greece and the latter from ancient China. And they determined the different features of theoretic structures between the oriental and occidental traditions of science and technology. The tendency of the future development of science and technology is changing from the axiom-theoretic to the model-theoretic orientation, at least the two approaches being complementary each other. To some extent, this means the retrospective of tradition in the turning point of history, and some of the China’s cultural traditions might become the starting points in formulating the future Chinese philosophy of science and technology.     

If and Then: A Critique of Speculative NanoEthics

Most known technology serves to ingeniously adapt the world to the physical and mental limitations of human beings. Humankind has acquired awesome power with its rather limited means. Nanotechnological capabilities further this power. On some accounts, however, nanotechnological research will contribute to a rather different kind of technological development, namely one that changes human beings so as to remove or reduce their physical and mental limitations. The prospect of this technological development has inspired a fair amount of ethical debate. Here, proponents and opponents of such visions of human enhancement are criticized alike for engaging in speculative ethics. This critique exposes a general pattern that extends to other nano-, bio-, or neuroethical debates. While it does not apply to all discussions of “enhancement technologies” it does apply to all ethical discourse that constructs and validates an incredible future which it only then proceeds to endorse or critique. This discourse violates conditions of intelligibility, squanders the scarce and valuable resource of ethical concern, and misleads by casting remote possibilities or philosophical thought-experiments as foresight about likely technical developments. In effect, it deflects consideration from the transformative technologies of the present.

Justification of interpersonal aggression in Japanese,American, and Spanish students

Six hundred and thirty‐two university students of both sexes—242 Japanese (137 males and 105 females), 190 Spanish (71 males and 119 females), and 200 American (100 males and 100 females)—completed a questionnaire that examined their attitudes toward various kinds of aggression directed at other people in different situations that ranged from self‐defense to a method of overcoming communication problems. Factor analysis revealed three factors: physical aggression (killing, torture, and hitting), direct verbal aggression (shouting and rage), and indirect verbal aggression (being ironic and hindering). The basic factor structure of the Japanese, the Spanish, and the USA samples was similar. In all samples, men showed a higher justification of physical aggressive acts in any situation and of indirect verbal aggression in nondefensive circumstances. Cultural differences were found in the degree of justification of the three factors: in all kinds of situations, Japanese students showed a lower justification of indirect verbal aggression but a higher justification of direct verbal aggression than USA and Spain samples. Physical aggression in defensive situations is justified more by Americans than by Japanese and Spanish students. These findings suggest the existence of a common basic moral code about physical aggressive acts, but there seems to be a cultural influence on moral codes concerning verbal aggressive acts. Oriental cultures, with an interdependent construal of self, seem to be more permissive of direct verbal aggression compared with Western cultures, but they have less tolerance for indirect verbal aggression. There were practically no significant differences between American and Spanish scores. Aggr. Behav. 25:185–195, 1999. © 1999 Wiley‐Liss, Inc.     

On the Question, “What is Law?”

Res Publica - Re-framing discussion of the question, “What is law?“ in terms of the contexts in which the whole question makes sense allows us to see that jurisprudence is about...     

Revisiting the learning-without-awareness question in human pavlovian autonomic conditioning: Focus on extinction in a dichotic listening paradigm

Numerous studies have indicated that, consistent with current “cognitive” accounts of information processing, human Pavlovian autonomic discrimination acquisition cannot occur without awareness of the CS-US relationship. However, extinction studies have suggested that awareness is not necessary, findings that, in information-processing terms, have been explained by assuming that the processing by the extinction stage is parallel (automatic) rather than serial (controlled). This explanation was tested in an 80-subject study. The first, acquisition phase was a standard semantic differential conditioning arrangement with a 96-db white noise as US, and a “long” CS-US interval of 8 s, with ten trials each of CS+ (paired with US) and CS− (unpaired) trials. In extinction (USs omitted), in order to obtain non-autonomic indices of processing and thereby test the information-processing account of “unaware” autonomic conditioning during extinction, a dichotic listening task was implemented, with the CSs presented in the unattended channel (ear), while the subject had to perform a semantic differential reaction task in an attended-to channel (other ear). In early extinction, the electrodermal response occurring at an interval of 9–15 s after CS onset (i.e., following placement of the US during acquisition) and the finger-pulse-volume response occurring at an interval of 4–11 s after CS onset both showed reliable conditioning, but reaction-time and subjective-report data for the recognized critical words indicated serial rather than parallel processing of the CSs during extinction.     

Dreaming under fire: the psyche in times of continuous stress

Continuous stress and trauma are manifested in dreams, the study of which can expand our knowledge concerning unconscious reactions to trauma and efforts of coping with continuous traumatic situations. In our research we asked people living under continuous threat of rocket attacks to record their dreams and their associations to them during four consecutive weeks. We collected 609 dreams from 44 women and 18 men (age range 14-62). The dreams submitted were analysed according to the Jungian approach in the light of the information and associations presented by the subjects. Full dream series of dreamers from each group were analysed in an attempt to capture the depth-psychological experience of living and dreaming under fire. The most frequent themes found were: ‘concrete vs. symbolic', ‘togetherness', ‘active ego', ‘fear and anxiety', ‘shadow' and ‘personal issue'. The subjects were divided into three age groups. Differences between the occurrences of themes were examined. On the unconscious level our results showed that the adolescents group seemed to be the most vulnerable to the stress situation (preponderance of concrete dreams), the mature adults group was the least influenced by it (preponderance of symbolic dreams and of the ‘personal issue' theme) and the young adults group made the greatest psychological efforts for coping (preponderance of ‘active ego' theme). We noted few anima figures appearing in the men's dreams, while animus figures appeared in the women's dreams. In another study undertaken immediately after one of the recent wars in Gaza we collected dreams of Israelis living in the south of Israel who were under heavy daily rocket attacks, and dreams of Palestinians living in the West Bank. The most significant difference we found between the groups was a preponderance of symbolic dreams among the Palestinians, as opposed to a preponderance of concrete trauma dreams among the Israeli group living on the Gaza border. In both groups we found archetypal symbols of evil. In conclusion, dreams can help us detect emotional distress, even when subjects seem ‘ok'. Early detection and working with dreams can help prevent the severity of delayed PTSD.     

Eyewitness identification in simultaneous and sequential lineups: an investigation of position effects using receiver operating characteristics

For decades, sequential lineups have been considered superior to simultaneous lineups in the context of eyewitness identification. However, most of the research leading to this conclusion was based on the analysis of diagnosticity ratios that do not control for the respondent’s response criterion. Recent research based on the analysis of ROC curves has found either equal discriminability for sequential and simultaneous lineups, or higher discriminability for simultaneous lineups. Some evidence for potential position effects and for criterion shifts in sequential lineups has also been reported. Using ROC curve analysis, we investigated the effects of the suspect’s position on discriminability and response criteria in both simultaneous and sequential lineups. We found that sequential lineups suffered from an unwanted position effect. Respondents employed a strict criterion for the earliest lineup positions, and shifted to a more liberal criterion for later positions. No position effects and no criterion shifts were observed in simultaneous lineups. This result suggests that sequential lineups are not superior to simultaneous lineups, and may give rise to unwanted position effects that have to be considered when conducting police lineups.     

Attribution style and post-traumatic stress severity in the Central Region of Kenya: Influences of dwelling location

This study investigated the influence of attribution styles as predictors of post-traumatic stress severity (PTSS) by dwelling in Kenya. A non-clinical convenience sample of 354 rural (n = 178) and urban (n = 176) Kenyans from the Central Region of Kenya were participants. They responded to a post-traumatic stress screener, attribution style questionnaire and post-traumatic disorder (PTSD) checklist. A regression analysis showed that the urban dweller (UD) sample was significantly more likely to attribute negative events to internal, specific causes than the rural dweller (RD) sample. Findings suggest social support protections in RD to buffer them from negative self-attributions for PTSS among this Kenyan sample.