Effects of test-mask similarity on forward and backward masking of patterns by patterns

Summary Effects of test-mask similarity on the masking function were examined in two experiments. In Experiment 1, random bar patterns were used as test and mask stimuli. Bars were oriented in 135° oblique direction in test stimuli, and in 135° or 45° oblique direction in mask stimuli. The SOA was varied from 0 to 100 ms (backward masking). In Experiment 2, red and blue random dot patterns were used as both test and mask stimuli, with SOAs of –100 to 100 ms (forward and backward masking). The subject was asked to report the number of bars or dots as quickly as possible. The results of four subjects in one experiment and five in the other indicated that masking effects were generally greater when the test and mask stimuli were the same in orientation or color than when they were different. Slightly asymmetrical U-shaped functions were obtained both in the same and in different (orientation or color) conditions. A two-factor model with a similarity-related symmetrical integration process and a similarity-unrelated asymmetrical interuption process was considered.Experiment 1 was conducted by the first and third authors at Chiba University, and Experiment 2 was performed by the first and second authors at the University of Tokyo     

Who's Up First? Testing for Order Effects in Structured Interviews Using a Counterbalanced Experimental Design

A growing body of research suggests that, apart from the wording of specific questions, various aspects of the interview process itself may affect the reliability of information provided by research participants. To examine whether the order of presentation of specific diagnostic modules affects the likelihood of subjects' yes/no responses within the Diagnostic Interview Schedule for Children (DISC), the authors used a counterbalanced design, presenting two DISC diagnostic modules to children and their parents in standard or reversed order. Results indicate that the order of module administration exerts effects on the total numbers of symptoms endorsed, level of impairment, and the likelihood of meeting diagnostic criteria, regardless of whether the information is provided by parent or child respondents. Future child and adult assessment measures should take these difficulties fully into account through novel approaches to instrument design and interview procedures.     

Trust, Gullibility, and Social Intelligence

A series of experiments conducted in Japan by Yamagishi and his associates are presented, all consistently showing that high trusters (as measured with a general trust scale) are more sensitive than low trusters to information potentially revealing lack of trustworthiness in others and judge other people's choice in a one-shot prisoner's dilemma more accurately. Based on these findings, a new theoretical twist is introduced to the "emancipation theory of trust" originally proposed by Yamagishi & Yamagishi (1994), that emphasizes the relation-expansion role of trust in addition to the traditionally noticed relation-fortification role of trust. When opportunity cost for staying in a commitment relation is generally high, it is more advantageous not to stay in secure and stable commitment relations but to explore opportunities that lie outside, and yet such social exploration involves the risk of being exploited by untrustworthy people. It is thus a more gainful strategy to invest "cognitive resources" in the nurturing of "social intelligence" needed to detect signals of untrustworthiness. General trust may be conceived as a by-product of the development of such social intelligence. Those who have invested in the development of social intelligence can afford to maintain a high level of general trust, whereas those who have not are encouraged to assume that "everyone is a thief" and to refrain from pursuing potentially lucrative but risky outside opportunities.     

Texture and motion spreading, the aperture problem, and transparency.

When a cross of either static or moving texture is inserted in the intersection of an Ehrenstein figure, we find that the texture and its motion appear to spread outside of the cross. We suggest that these phenomena are analogous to neon color spreading, wherein an interpretation of a transparent surface makes the properties of that surface, which are physically visible only inside the cross, appear to spread over its apparent extent. In our experiments, the texture and the motion of the cross are attributed to the transparent surface. In addition, the spreading changes the apparent aperture within which the texture and its motion are seen, leading to a corresponding change in the apparent direction of motion.     

The role of myelination in learning performance observed in two strains of myelin-deficient mutant mice (shiverer and mld)

In order to study whether myelination is involved in learning performance, the behavior of myelin-deficient mutant mice (shiverer and mld) was examined. Shiverer is a deletion mutant of the myelin basic protein (MBP) gene causing severe myelin deficits due to the complete absence of MBP, while mld, allelic mutant to shiverer, shows lowered MBP expression, resulting in less severe effects. Shiverer clearly showed deficits in successive reversal learning, while mld showed less deficits in the learning performance. Both mutant mice showed no deficits in the radial maze performance, which is though to show the natural foraging behavior of rodents. These results suggest that myelin formation is related to learning but not to natural behavior.     

Effect of unpleasant loud noise on hippocampal activities during picture encoding: an fMRI study

The functional link between the amygdala and hippocampus in humans has not been well documented. We examined the effect of unpleasant loud noise on hippocampal and amygdaloid activities during picture encoding by means of fMRI, and on the correct response in humans. The noise reduced activity in the hippocampus during picture encoding, decreased the correct response and increased the activity of the amygdala. A path diagram using structural equation modeling suggested that hippocampus activity might be depressed by high amygdala activity. Therefore, noise should diminish memory by reducing hippocampal activity, which might be depressed by high amygdala activity.     

Postmodern consciousness in psychotherapy

Modern consciousness is a cultural and historical achievement in the West and a developmental task for each person now. Modern consciousness consists in the emancipation from the power of community, animistic nature and the unconscious. It is connected with neurosis and psychotherapy because it has to do with inner conflicts. But today there is an increasing number of cases which are characterized by dissociation and acting out, without the feeling of conflicts. Consciousness seems to be changing toward a new conception which might be called 'postmodern consciousness'. The essence of postmodern consciousness is shown by interpreting two dreams internally. The first dream from a case of depersonalization indicates that it is not necessary to be entangled with the object. There is a different kind of coniunctio in the mode of seeing. The second dream from a case of dissociative disorder shows a world which has neither traces of pre-modern cosmology-high and low, here and the beyond-nor modern interiority. There is only surface and self-reflection without content. The discussion of dreams suggests that postmodern consciousness is not to be understood as premature and pathological. It is therapeutically important to refine and deepen postmodern consciousness.     

Why do people reject unintended inequity? Responders' rejection in a truncated ultimatum game

Rejection of an inequitable and yet unintended outcome in a truncated ultimatum game was examined in an experiment with 46 undergraduate students (27 men and 19 women) from a large national university in Japan. In an ultimatum game, one of two players, the proposer, makes an offer to divide a fixed-sum of money. The other player, the responder, decides whether to accept or reject the offer. When the responder rejects the proposer's offer, neither of the two players receives a reward. Previous work examining the behavior of participants in the truncated ultimatum game employed strategy method in their experimental design. We examined whether these previous findings would be replicated in an experimental design that did not use the strategy method and instead used the standard one-shot game. Seven out of 46 responders given an inequitable offer rejected it, replicating prior results with the strategy method. We further found that subjects who rejected an offer that was involuntary and yet inequitable did not over-attribute intentions to the proposer's involuntary behavior more strongly than did acceptors. These findings strongly suggest that aversion to inequity is the explanation for the subjects' rejection of the inequitable offer.     

Geographical profiling incorporating neighbourhood-level factors using spatial interaction modelling

The aim of this study was to examine the applicability of methods that use spatial interaction modelling to predict the most probable area for an offender's residence. Tokyo, which is the capital of Japan and is divided into 1507 square-kilometre zones, was selected as the study area. We analysed 4316 criminal trips to commit residential burglaries by 1089 offenders who lived in Tokyo. The following neighbourhood-level factors, and a distance-decay effect between zones, were incorporated into the proposed model: the size of the residential population aged 15–59 years in origin zones, the numbers of households living in detached houses, newcomers, the number of police facilities in destination zones, and the spatial structures of the criminal trips. Search areas calculated by the proposed model were smaller than previous models, suggesting that neighbourhood-level factors are important for predicting the location of an offender's residence.     

Group Dynamics in Japan

Studies in group dynamics in Japan, which started just after the Second World War, are reviewed. This review categorizes the studies into two classes: those conducted in the first generation (up to the 1970s) which still remain influential today, and those which represent the current major research trends in the area. The first generation is characterized by a strenuous catching up of studies conducted in the U.S. The second generation has been a theoretical and empirical expansion of the area, and has emphasized the bilateral, dynamic relations between the nature of human collectivities (including culture) and the individuals' psychological state. It has been increasingly recognized that what was regarded as an individual psychological phenomenon in the past should be re-examined from the viewpoint of group dynamics. This goes beyond the traditional definition of small groups research in the laboratory setting. Group dynamics is developing as a field of study in which any kind and size of human collectivity is investigated regarding its dynamic nature and functions that provide a life-world appearing in front of each individual in the collectivity.