Change in ethnic identity across the college transition

This article examined changes in ethnic identity as a function of college type and residential status and whether differences due to college type could be explained by involvement in extracurricular activities and college ethnic composition. Although no changes in ethnic labeling or belonging were found, there was a normative decrease in ethnic search, independent of residential status. Moreover, the decline in ethnic search was significantly greater at 2- than 4-year colleges, and this difference was mediated by higher rates of participation in extracurricular activities at 4-year colleges. Ethnic identity did not vary by college ethnic composition. There were no ethnic or generation differences in ethnic identity change; however, women were more likely to include an American term in their ethnic label than were men, over time. Averaging across time, students at 4-year colleges also had a greater preference for the American term in their ethnic labels. Findings illuminate the importance of context in shaping ethnic identity.     

Adolescents' perceptions toward the internet: a 4-T framework.

This study could be viewed as one of the initial attempts to probe adolescents' general perceptions toward the Internet. Through interviewing 40 adolescents in Taiwan, this study found the following 4-T categories for interpreting their perceptions toward the Internet, which included Technology, Tool, Toy, and Travel. Most adolescents perceived the Internet as a tool, implying that these adolescents, in general, held pragmatic views about the Internet. This paper further proposes a framework to elaborate the 4-T categories. The framework consists of the following two axes: one axis probably shows the ontology of the Internet, ranging from a "product" to a "process," whereas the other axis indicates the perceived feature of the Internet, varying from "functional" to "technical." It is finally suggested to carefully investigate the effects of people's Internet perceptions on their behaviors, as well as psychological and cognitive activities in Internet-related environments.     

Stable icosahedral quasicrystals in the Ag-In-Ca,Ag-In-Yb,Ag-In-Ca-Mg and Ag-In-Yb-Mg systems

On the basis of the idea that a quasicrystal is a compound in which the average number of valence electrons per atom is around 2.0 and that its formation is dominated by atom size, stable icosahedral quasicrystals have been successfully synthesized in Ag-In-Ca, Ag-In-Yb, Ag-In-Ca-Mg and Ag- In-Yb-Mg systems. The Ag-In-Ca and Ag-In-Yb icosahedral quasicrystals have stoichiometry around Ag 42 In 42 Ca 16 and Ag 42 In 42 Yb 16 . The Ag-In-Ca-Mg and Ag-In-Yb-Mg quasicrystals form in the composition ranges Ag42 x /2 In 42 x /2 Ca 16 Mg x ( x =0-7.5 at.%) and Ag 42 x /2 In 42 x /2 Yb 16 Mg x ( x =0-10 at.%). Electron diffraction studies confirmed that the icosahedral quasicrystals have a primitive lattice. The average number of valence electrons per atom in all these quasicrystals is 2.0.     

A multichannel PC tachistoscope with high resolution and fast display change capability

The number of channels that PC tachistoscopes can have has increased recently (Bokhorst, 1995; Myors, 1998); however, neither the quality of display nor speed of image switching has been improved. This article shows the capability of VESA’s VBE 3.0 standard (1998) for increasing the number of channels of high-quality images. And the refresh rate can be set to the fastest cathode ray tube (CRT) scanning rate the monitor can tolerate in order to reduce the timing delay of changing display. A PCTSCOPE library was written in C to provide these capabilities, which is compatible with conventional DOS real mode. The PC tachistoscope can have numbers of channels with various resolutions and colors and different refresh rates. For example, 25 images with the resolution of 640 × 480 pixels and 256 colors can be loaded to video memory, and vertical refresh rate can be set to 180 Hz. It takes less than 6 msec to change the display among 25 channels in synchronizing with the start of the video scanning frame. In this library, the number of channels, the resolution of the images, and the speed of changing display all are improved. The multichannel PC tachistoscope with this technique is especially suitable for research requiring high-quality images and rapid successive presentation of stimuli.     

Clinician Perspectives of Diagnosis and Perceived Client Change in “Real World” Psychotherapy for Youth Emotional and Behavioral Disorders

We investigated the extent to which clinician-assigned diagnoses of emotional and behavioral disorders and clinicians’ perceptions of client change are consistent with structured measures of youth clinical functioning and parent/family characteristics within the context of usual care or “real world” psychotherapy. A total of 54 therapists from two publicly-funded youth outpatient mental health clinics and 128 youths and parents from the therapists’ combined caseloads were included in the study. Clinician-assigned diagnosis and youth and family demographics were collected at the initial visit, clinician-reported perceived client change was collected at 6-month follow-up, and structured measures of youth clinical functioning and parent/family characteristics were collected at both time points. Results indicate some overlap between clinician-assigned diagnosis, clinician-reported perceived client change, and structured measures of youth clinical functioning and parent/family characteristics after controlling for demographic factors. Results are discussed in terms of implications for the implementation of evidence-based practices in real world community settings.     

Parenting Interventions for Children with Autism Spectrum and Disruptive Behavior Disorders: Opportunities for Cross-Fertilization

Empirical support exists for parent training/education (PT/PE) interventions for children with disruptive behavior disorders (DBD) and autism spectrum disorders (ASD). While the models share common roots, current approaches have largely developed independently and the research findings have been disseminated in two different literature traditions: mental health and developmental disabilities. Given that these populations often have overlapping clinical needs and are likely to receive services in similar settings, efforts to integrate the knowledge gained in the disparate literature may be beneficial. This article provides a systematic overview of the current (1995–2005) empirical research on PT/PE for children with DBD and ASD; attending to factors for cross-fertilization. Twenty-two ASD and 38 DBD studies were coded for review. Literature was compared in three main areas: (1) research methodology, (2) focus of PT/PE intervention, and (3) PT/PE procedures. There was no overlap in publication outlets between the studies for the two populations. Results indicate that there are opportunities for cross-fertilization in the areas of (1) research methodology, (2) intervention targets, and (3) format of parenting interventions. The practical implications of integrating these two highly related areas of research are identified and discussed.     

Rapid stimulatory effects of testosterone upon myotubule metabolism and sugar transport,as assessed by silicon microphysiometry

A considerable number of studies have revealed behavioral circumstances that give rise to small or transient differences in circulating testosterone concentrations; however, careful consideration of androgen physiology leads to the disquieting conclusion that these differences are often unlikely to have much physiologic or behavioral significance. In the present report, we observe that small transients of testosterone secretion could have very rapid anabolic effects on a cultured muscle-derived cell line. Specifically, we have examined the effects of testosterone on metabolism in cultured C2C12 myotubules, using a silicon microphysiometer. The instrument monitors cellular extrusion of protons and acidic metabolites, and such extrusion is directly linked to ATP hydrolysis, thus providing a real-time measure of cellular metabolism. Testosterone caused a small but significant increase in metabolism. The most striking feature of this effect was its rapidity, in that it occurred within 3 hr. This rapid enhancement of metabolism suggested that testosterone might be enhancing substrate uptake even more rapidly. Indeed, we found that testosterone increased 2-deoxyglucose uptake within 1 min. The rapidity of this effect seemed to preclude mediation by classical intracellular steroid receptors. In support of this, we were unable to detect specific intracellular binding of testosterone. These findings show that testosterone can exert rapid anabolic effects on substrate transport and metabolism in myotubules. Should this finding general to muscle in vivo, it suggests that relatively small individual differences in testosterone profiles, in response to various social interactions, may have very real consequence for subsequent muscle physiology. © 1996 Wiley-Liss, Inc.     

Learning what feelings to desire: socialization of ideal affect through children's storybooks

Previous findings suggest that cultural factors influence ideal affect (i.e., the affective states that people ideally want to feel). Three studies tested the hypothesis that cultural differences in ideal affect emerge early in life and are acquired through exposure to storybooks. In Study 1, the authors established that consistent with previous findings, European American preschoolers preferred excited (vs. calm) states more (indexed by activity and smile preferences) and perceived excited (vs. calm) states as happier than Taiwanese Chinese preschoolers. In Study 2, it was observed that similar differences were reflected in the pictures (activities, expressions, and smiles) of best-selling storybooks in the United States and Taiwan. Study 3 found that across cultures, exposure to exciting (vs. calm) storybooks altered children's preferences for excited (vs. calm) activities and their perceptions of happiness. These findings suggest that cultural differences in ideal affect may be due partly to differential exposure to calm and exciting storybooks.