Caregiver-Therapist Ethnic Similarity Predicts Youth Outcomes From an Empirically Based Treatment.

The effects of caregiver-therapist ethnic similarity on youth outcomes from multisystemic therapy (MST), as implemented in dissemination sites, were examined. Consistent with hypotheses, findings confirmed that youths whose caregivers were ethnically matched with their therapists demonstrated greater decreases in symptoms, longer times in treatment, and increased likelihood of discharge for meeting treatment goals relative to youths whose caregivers and therapists were not ethnically matched. In addition, for youths whose caregivers were of mixed ethnic heritage, caregiver-therapist ethnic match was associated with greater improvements in psychosocial functioning. Ethnic match effects on both treatment length and discharge success were partially mediated by therapist adherence to MST. This study shows the importance of examining the effects of both client and therapist ethnicity on outcomes from empirically based treatments. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of recrystallisation on Al3Zr dispersoid behaviour in thick plates of aluminium alloy AA7150

The ageing responses of surface/centre layer materials from a commercially produced AA7150 thick plate have been studied after both water quenching (WQ) and air cooling (AC). The results show that the higher degree of recrystallisation near the plate surface decreases its age hardening response in AC condition. Quench-induced phases have been found to precipitate preferentially on Al₃Zr dispersoids in recrystallised grains. Microstructural observations show that Al₃Zr dispersoids in recrystallised grains exhibit the same crystal structure and orientation as those in adjacent subgrains.     

The effect of test conditions on apparent smoke density from various materials

Four samples of thermoplastics and nine samples of wood were evaluated for smoke evolution in the Aminco-NBS smoke chamber under piloted (flaming) conditions, using two different types of pilot burners, and in the Arapahoe chamber.     

Medications prescribed for children with mood disorders: Effects of a family-based psychoeducation program.

Few controlled trials have examined psychotropic medications in children with mood disorders. Multiple medications are often prescribed for these children, who frequently suffer from several comorbid conditions. However, this polypharmacy has been infrequently studied and may lead to adverse drug-drug interactions. Multi-Family Psychoeducation Groups (MFPGs) are an 8-session, manual-driven treatment for children with mood disorders, designed as an adjunct to current medications and psychotherapy. In part, MFPG teaches parents and children to be better consumers of mental health care, including medications. This study examined the effect of MFPG on medications taken by 165 children, ages 8-11, with mood disorders. The authors hypothesized that MFPG would not affect the mean number of medications taken but that the variance in number of medications would decrease from pre- to posttreatment (i.e., the number of medications prescribed for any given child should become more closely distributed around the sample mean). Approximately 70% of participants were diagnosed with bipolar spectrum disorders, and 30% were diagnosed with depressive spectrum disorders. Most had both comorbid behavioral (97%) and anxiety (69%) disorders. Information regarding medications was gathered 4 times: at baseline, 6, 12, and 18 months. Approximately half (n=78) of the participants were randomized into immediate treatment, and half (n=87) were randomized into a 1-year wait-list condition. All were encouraged to continue treatment as usual throughout the study. As hypothesized, no significant pre- to posttreatment differences were found between groups for the mean number of current medications, but variance declined significantly from pre- to posttreatment. Implications and future research goals are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The developmental role of intuitive principles in choosing mathematical strategies.

This study investigated the relation between the development of understanding principles that govern a problem and the development of mathematical strategies used to solve it. College students and 2nd, 5th, 8th, and 11th graders predicted the resulting temperature when 2 containers of water were combined. Students first estimated answers to the problems and then solved the problems using math. The pattern of estimated answers provided a measure of the intuitive understanding of task principles. Developmental differences in intuitive understanding were related to the type of math strategy students used. Analysis of individual data patterns showed that understanding an intuitive principle was necessary but not sufficient to generate a math strategy consistent with that principle. Implications for the development of problem solving are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

EEG coherence following acute and chronic clozapine in treatment-resistant schizophrenics.

Electroencephalographic (EEG) coherence is an index of brain regional coupling that has been found to be abnormal in people with schizophrenia but has not been systematically examined in response to neuroleptics. EEG coherence in slow (delta and theta) frequencies was assessed in 17 treatment-resistant people with schizophrenia at baseline, 2 hr after their first oral dose (25 mg) and after 6 weeks of clozapine treatment. Compared with EEG norms, participants exhibited significant interhemispheric and intrahemispheric coherence abnormalities prior to treatment. Both acute and chronic treatments altered coherence but differed with respect to their relationship to symptom reduction and their ability to normalize or augment pretreatment abnormalities. Findings are discussed in relation to "disconnection" theories of schizophrenia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reflections on iCODE: using web technology and hands-on projects to engage urban youth in computer science and engineering

More than 200 middle school and high school students from underserved urban communities in Boston, Lowell, and Lawrence, Massachusetts, participated in after-school and summer enrichment programs over a three-year period, using hands-on learning materials and web resources to complete hands-on microcontroller-based projects. Program content was based on a suite of robotics and electronics kits developed by the University of Massachusetts Lowell and Machine Science Inc., together with on-line instructions, a web-based programming tool, and a shared electronic portfolio of student projects. Participating students worked with classroom teachers and undergraduate mentors to complete a series of projects, and took part each year in a non-competitive robotics exhibition and a competitive robot sumo tournament. Goodman Research Group assessed learning outcomes and attitudinal changes using a variety of measures, including observations of program sessions, group interviews with participating students, pre- and post-program student surveys, and educator feedback. The program was found to effectively engage participants, give them real engineering and programming skills, improve their attitudes toward science, technology, engineering, and mathematics (STEM) subjects, and increase their interest in STEM career pathways. These results are presented, along with lessons learned from the program implementation, technology development, and evaluation.     

Effects of Acacia condensed tannins on urinary parameters,body mass,and diet choice of an Acacia specialist rodent,Thallomys nigricauda

The aim of this study was to investigate the dietary and physiological effects of condensed tannin ingestion on foregut fermenters, using Thallomys nigricauda, a folivorous rodent, as a model. We initially investigated the variability in physiological parameters, such as daily body mass (DM_b), daily feed intake, daily fecal energy loss (FE), daily energy intake (DEI), daily urine pH, and daily urinary ammonia and urea concentrations, in response to different diets with low condensed tannin levels. This experiment was conducted to identify which physiological variables showed the least variation in the absence of tannin. In a second experiment, we investigated the response of the same dietary and physiological parameters to the effects of high dietary condensed tannin ingestion in T. nigricauda. We hypothesized that DM_b, daily feed intake, FE, and DEI of T. nigricauda would be adversely affected by high dietary tannin content. We predicted that detoxification activity by T. nigricauda would increase at higher tannin levels. Ingestion of tannins affected the nutritional status of T. nigricauda, as shown by a decrease in body mass at high tannin levels. We also found that fewer ammonium ions were excreted in the urine by T. nigricauda, as would be expected if this were a means of regulating metabolic acidosis. The urine produced was more alkaline. This result indicates that T. nigricauda is not metabolizing these allelochemicals. Urea production was initially reduced, indicating conservation of bicarbonate ions that will neutralize blood acidity if there is detoxification. A diet choice experiment showed that tree rats avoid high tannin diets, even to the extent that they lose body mass on an alternative diet. This last-mentioned result is noteworthy because previous studies of the effects of tannins on herbivorous mammals have shown that there is physiological control rather than behavioral avoidance of the negative effects of tannin ingestion.