MATERNAL EXPECTATIONS FOR MASTERY OF DEVELOPMENTAL TASKS IN JAPAN AND THE UNITED STATES*

Maternal expectations about development help organize parental behavior by providing internal referents against which a child's growth and behavior are evaluated, thus identifying occasions for intervention by the adult. Fifty-eight mothers from Japan and 67 mothers from the United States were interviewed about the ages at which they expected their four-year-old children to acquire a number of specific developmental skills. There were no differences between the two groups of mothers in mean age of mastery expectation across all 38 items but Japanese mothers expected early mastery on skills that indicated emotional maturity, self-control, and social courtesy. Mothers in the U.S. expected mastery at an earlier age on items indicating verbal assertiveness and social skills with peers. Maternal expectations were found to correlate with children's performance on tests of school aptitude when the children were six years of age.     

Difference threshold for stimulus length under simultaneous and nonsimultaneous viewing conditions

The present study was concerned with Weber’s Law as it is related to the discriminability of the lengths of lines. Experiments were conducted to investigate three questions: (I) Is Weber’s Law equally applicable to simultaneous and nonsimultaneous viewing conditions? (2) Is the relationship between the stimulus sizes and the values ofDLs described more adequately by the function proposed by Weber or a generalized Weber’s Law stated by Miller? and (3) Is Weber’s Law better approximated by proximal or distal size? It was demonstrated that the discriminability of the lengths of lines follows Weber’s Law under the nonsimultaneous viewing condition, but not under the simultaneous viewing condition. Under the nonsimultaneous viewing condition, it was noted that the generalized Weber’s Law as stated by Miller described the relationship between the DL and stimulus size significantly better than the function proposed by Weber. From the results pertaining to the third question, it was not possible to determine whether the proximal or the distal size follows Weber’s Law more closely.     

THE SEMANTICS OF FACIAL EXPRESSIONS AND THE PREDICTION OF THE MEANINGS OF STEREOSCOPICALLY FUSED FACIAL EXPRESSIONS

Two experiments were concerned with scaling affective meanings of posed facial expressions using a specially devised form of semantic differential and with determining the extent to which the meaning of stereoscopically fused facial expressions could be predicted. Both experiments provided evidence for at least three dimensions. High reliability for scaling the affective meanings of facial expressions was demonstrated. Two methods were employed for predicting the meaning of a composite expression. The results indicated that the predictions based on the congruity principle do no better than those based on a simple algebraic mean of the two components.     

BINOCULAR RIVALRY AS A FUNCTION OF INCONGRUITY IN MEANING

This is the third of a series of three papers dealing with semantics of facial expressions. The purpose of this experiment was to determine whether the ratings of two stimulus inputs on semantic differential scales would predict the experience of binocular rivalry. The stimuli used were five full-face photographs of a man expressing different emotions. These stimuli were rated on the semantic differential and all possible pairs of these stimuli were used as stereograms. It was hypothesized that semantically incongruous stimulus inputs would lead to binocular rivalry and that congruous ones would lead to an absence of rivalry. The hypothesis was supported.     

On the semantic duplicity of the first person pronoun “I”

Continental Philosophy Review -     

Random Walker Test: A computerized alternative to the Road-Map Test

The Road-Map Test (RMT) is a popular neurological assessment of left-right orientation, using a simplified road map. Inspired by the RMT, we developed a new computerized navigation test, the Random Walker Test (RWT), for further quantitative assessment of left-right orientation ability. RWT provides verbal or nonverbal instructions for the direction (left, right, or front) in which to proceed, and participants must judge the spatially correct direction. Perspectives rotate by 90° during navigation. Verbal judgments demand verbal-to-spatial mapping of left/right/front and, if necessary, egocentric perspective rotation. Using the RWT, we evaluated the left-right orientation of normal male participants. The RWT reliably recorded the response times and error rates for participant performance and also revealed egocentric perspective rotation as an unreliable mental process with large intra- and interpersonal variability. These results indicate that the RWT may be useful in investigating left-right orientation and/or egocentric perspective rotation in both normal participants and neuropathological patients.     

Computer‐based teaching of Kanji construction and writing in a student with developmental disabilities

Students with developmental disabilities often have difficulty with writing skills such as tracing, copying, and dictation writing. A student with writing difficulties participated in the present study, which used computer‐based teaching applied in the home. We examined whether a student could copy Japanese Kanji characters after training with a constructed response matching‐to‐sample (CRMTS) procedure. The procedure was designed to teach identity Kanji construction. The results showed that the student not only acquired the constructed responses through this procedure but also to spelling generalized to copy trained and untrained Kanji characters. The results are discussed in terms of the effect of the CRMTS procedure on the acquisition and transfer of writing characters and the applicability of computer‐based home teaching. Copyright © 2008 John Wiley & Sons, Ltd.     

Shared minds: Effects of a mother's imitation of her child on the mother–child interaction

Children with Autistic Spectrum Disorders (ASD) have impaired social interaction right from early development. Previous studies (Dawson & Adams, 1984; Tiegerman & Primavera, 1981, 1984) have suggested that imitating children with ASD is effective in facilitating their social behaviors. The present case report, through a 6‐month intervention, investigated how a home‐based intervention of helping a mother imitate her 21‐month‐old child with ASD impacted the child's development of social communication outside the experimental settings. Our results show that the mother's imitation of her child might be associated with the development of nonverbal joint attention skills. Positive changes in the mother's emotion towards her child and the mother–child interaction also were noted and represent other important effects of parental involvement in therapeutic interventions for children with ASD.     

Brain mechanisms for predictive control by switching internal models: implications for higher-order cognitive functions

Humans can guide their actions toward the realization of their intentions. Flexible, rapid and precise realization of intentions and goals relies on the brain learning to control its actions on external objects and to predict the consequences of this control. Neural mechanisms that mimic the input–output properties of our own body and other objects can be used to support prediction and control, and such mechanisms are called internal models. We first summarize functional neuroimaging, behavioral and computational studies of the brain mechanisms related to acquisition, modular organization, and the predictive switching of internal models mainly for tool use. These mechanisms support predictive control and flexible switching of intentional actions. We then review recent studies demonstrating that internal models are crucial for the execution of not only immediate actions but also higher-order cognitive functions, including optimization of behaviors toward long-term goals, social interactions based on prediction of others’ actions and mental states, and language processing. These studies suggest that a concept of internal models can consistently explain the neural mechanisms and computational principles needed for fundamental sensorimotor functions as well as higher-order cognitive functions. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.