Interference from irrelevant features on visual discrimination by macaques (Macaca fuscata): a behavioral analogue of the human Stroop effect

To study the operation of selective attention in a conflict situation with automatic processes, we trained 4 Japanese macaques (Macaca fuscata) extensively on a manual go/no-go task. The monkey had to discriminate either the color, shape, motion direction, or location of a visual stimulus. In each trial, the behavioral meaning of the relevant feature (go or no-go) could either be congruent or incongruent with irrelevant features of the same stimulus. Reaction times were slowed, and error rates increased when irrelevant stimulus features were incongruent with the required response. The effects were obtained when the monkey attended to the color, shape, or motion direction, but not when it attended to the location of the stimulus. The effects were cumulative so that the interference from 1 incongruent feature was smaller than that from 2 incongruent features. We propose that the present paradigm provides a behavioral analogue of the human Stroop effect.     

Supersonic crack motion in a harmonic lattice

Antiplane shear cracks in a harmonic square lattice have been studied in a molecular dynamics simulation. They can reach velocities larger than the shear wave velocity.     

Interaction Between Syntactic Structure and Information Structure in the Processing of a Head-Final Language

The effects of syntactic and information structures on sentence processing load were investigated using two reading comprehension experiments in Japanese, a head-final SOV language. In the first experiment, we discovered the main effects of syntactic and information structures, as well as their interaction, showing that interaction of these two factors is not restricted to head-initial languages. The second experiment revealed that the interaction between syntactic structure and information structure occurs at the second NP (O of SOV and S of OSV), which, crucially, is a pre-head position, suggesting the incremental nature of the processing of both syntactic structure and information structure in head-final languages.     

Dialectal differences in hemispheric specialization for Japanese lexical pitch accent

Language experience can alter perceptual abilities and the neural specialization for phonological contrasts. Here we investigated whether dialectal differences in the lexical use of pitch information lead to differences in functional lateralization for pitch processing. We measured cortical hemodynamic responses to pitch pattern changes in native speakers of Standard (Tokyo) Japanese, which has a lexical pitch accent system, and native speakers of ‘accentless’ dialects, which do not have any lexical tonal phenomena. While the Standard Japanese speakers showed left-dominant responses in temporal regions to pitch pattern changes within words, the accentless dialects speakers did not show such left-dominance. Pitch pattern changes within harmonic-complex tones also elicited different brain activation patterns between the two groups. These results indicate that the neural processing of pitch information differs depending on the listener’s native dialect, and that listeners’ linguistic experiences may further affect the processing of pitch changes even for non-linguistic sounds.     

Theory of mind enhances preference for fairness

The purpose of the current study was to examine the role of theory of mind in fairness-related behavior in preschoolers and to introduce a tool for examining fairness-related behavior in children. A total of 68 preschoolers played the Ultimatum Game in a face-to-face setting. Acquisition of theory of mind was defined as the understanding of false beliefs using the Sally-Anne task. The results showed that preschoolers who had acquired theory of mind proposed higher mean offers than children who had not acquired theory of mind. These findings imply that the ability to infer the mental states of others plays an important role in fairness-related behavior.     

Cross-cultural issues in the treatment of intractable anorexia nervosa

This paper presents a case of intractable anorexia nervosa in a child burdened beyond her capabilities by unresolved conflicts in a parent. The dynamics will be assessed in the context of open systems theory of family function to suggest that the mother's conflicts, fixated at the time she left her native country, and her attempts to adapt to a new one, combined with other family members' failure to understand or appreciate the mother's cultural roots, interrupted the patient's normal maturation/development. The paper also presents a successful course of treatment of the binational anorexic girl, using a comprehensive inpatient program, emphasizing intensive family therapy with an open systems theory framework.The earlier version of this paper was presented at the Sixth World Congress of the International College of Psychosomatic Medicine, Montreal, Canada, September, 1981. Helpful comments by Regina Casper, M.D., helpful discussion by Kenneth Calestro, M.A., and support and encouragement by Katharine N. Dixon, M.D. are greatly appreciated.     

Fukuzawa Yukichi and religion

When the Meiji government allowed Christianity to be proclaimed in Japan in 1873, there aroused heated controversy about how to deal with religion including Christianity. Fukuzawa Yukichi, the most influential thinker and opinion‐leader among Japanese intellectuals in those days, participated in the controversy and wrote more than 80 articles concerning religion. At first, he took a critical standpoint against Christianity from the Utilitarian viewpoint. Then he changed his viewpoint of religion and came to admit a Unitarian Christianity for a little while. But he gradually came to be familiar with Pure Land Buddhism and developed his original phibsophy of religion in his later years.

In this article I trace the process of change in Fukuzawa's religious viewpoint and clarify his philosophy of religion in his later years, by examining his writings in chronological order.     

The development of optimism and perceived attainment from elementary school to junior high school

Optimism (a perception of future improvement of children's own achievement levels) and perceived present attainment were examined developmentally in relation to academic achievement and motivation. Subjects were 507 Japanese third-, fifth-, and seventh-grade children. After categorization as high or low on perceived attainment (H/L) and optimism (h/l), two (Hh, Ll), three (Hh, Lh, Ll), and four (Hh, Hl, Lh, Ll) groups were obtained in the third, fifth, and seventh grades, respectively. These groups showed characteristic features in terms of motivation- and achievement-related measures. Both optimism and perceived attainment explained the differences in scores on the measures between the two third-grade groups. In grades 5 and 7 perceived attainment was the primary factor explaining the group differences, while the optimism dimension was a secondary factor, whose influence was stronger in grade 7. The results are discussed in relation to the development of self-perceptions, as well as changes in learning environment between elementary school and junior high school.     

Priority Information Used for the Processing of Japanese Sentences: Thematic Roles,Case Particles or Grammatical Functions?

The present study investigated scrambling effects on the processing of Japanese sentences and priority information used among thematic roles, case particles and grammatical functions. Reaction times for correct sentence decisions were significantly prolonged for scrambled active sentences with transitive verbs in the first experiment and with ditransitive verbs in the second experiment. Errors were made with scrambled sentences more than canonical sentences in both experiments, which suggested that scrambling effects were apparent in active sentences. Passive sentences in the third experiment indicated that canonical order defined based on case particles, not thematic roles, was more quickly and accurately identified than scrambled order. Potential sentences in the fourth experiment and causative sentences in the fifth experiment indicated that the processing of scrambled sentences based on grammatical functions, but not on case particles, required longer reaction times and resulted in higher error rates than canonical sentences. Consequently, scrambling effects in the present study indicated that neither thematic roles nor case particles can provide fully-satisfactory information for canonical phrase order, and that only grammatical functions offer satisfactory information in all types of sentences.