Movement pattern and parameter learning in children: effects of feedback frequency

Reduced feedback during practice has been shown to be detrimental to movement accuracy in children but not in young adults. We hypothesized that the reduced accuracy is attributable to reduced movement parameter learning but not pattern learning in children. A rapid arm movement task that required the acquisition of a motorpattern scaled to specific spatial and temporal parameters was used to investigate the effects of feedback (FB) frequency (100% vs. 62% faded) on motor learning differences between 19 school-age children and 19 young adults. Adults and children practiced the task for 200 trials under the 100% or faded FB condition on day 1 and returned on day 2 for a no-FB retention test. On the retention test, children who practiced with reduced feedback performed with greater temporal parameter errors, but not pattern error than children who received frequent feedback. Motor skill learning in children is influenced byfeedback frequency during practice that affects parameter learning but not pattern learning.     

Does price matter? Overseas students in UK higher education

This paper explores the determinants of the choice of UK universities by overseas undergraduate applicants. We use data on overseas applicants in Business Studies and Engineering from 2002 to 2007, to 97 UK universities. Estimating using a Hausman–Taylor model to control for the possible correlation between our explanatory variables and unobservable university-level effects, we find that the fees charged may influence the application decision of some students, but that any relationship between levels of fees and applications is non-linear. The quality of education provided is positively and significantly related to the number of applications. Proximity to London and the existing popularity of a university among home applicants, are also significant predictors of university applications.     

Clinical utility of the Devereux Behavior Rating Scale—School Form among culturally diverse children

Two hundred sixty-seven children from three ethnic samples (95 Caucasians, 95 African Americans, and 77 Hispanics) were rated by their teachers on the Devereux Behavior Rating Scale-School Form (DSF). The data were analyzed by univariate and multivariate ANOVAs, discriminant analysis, and sensitivity and specificity analysis. Results indicate the DSF has utility in screening children for serious emotional disturbance in the present sample. The findings also suggest that the criterion-related validity of the DSF found for the general population can be generalized to Caucasian, African American, and Hispanic children. In addition, the cutoff score of 1 SD above the mean on the DSF Total scale was found to yield the highest true positive and negative hit rates for the total and Caucasian samples. The optimum cutoff scores were slightly lower for the African American and Hispanic samples. Usefulness and limitation of the DSF as a screening instrument with school children are discussed. © 1997 John Wiley & Sons, Inc.     

Researchers Apply Lesson Study: A Cycle of Lesson Planning,Implementation, and Revision

Scripted lesson plans and/or professional development alone may not be sufficient to encourage teachers to reflect on the quality of their teaching and improve their teaching. One learning tool that teachers may use to improve their teaching is Lesson Study (LS). LS is a collaborative process involving educators, based on concepts of iteration and revision, to improve instruction. The initial use of an adapted version of LS referred to as a microteaching lesson study (MLS) is described in this article. Our purpose is to illustrate the process of MLS used by a group of researchers when developing lesson plans for teaching students with learning disabilities. We describe MLS, and then (1) share an application of MLS used by a research team in developing a writing intervention, and (2) discuss how the MLS format was mirrored with K‐12 teachers during professional development training.     

Effects of rhizobacteria <Emphasis Type="Italic">Paenibacillus polymyxa</Emphasis> APEC136 and <Emphasis Type="Italic">Bacillus subtilis</Emphasis> APEC170 on biocontrol of postharvest pathogens of apple fruits

In this study, plant growth-promoting rhizobacteria (PGPR) were evaluated as potential biocontrol agents against postharvest pathogens of apple fruits. In vitro bioassays revealed that, out of 30 isolates screened, isolates APEC136 and APEC170 had the most significant inhibitory effects against the mycelial growth of several fungal pathogens. Analysis of 16S ribosomal RNA (rRNA) sequences identified the two effective isolates as Paenibacillus polymyxa and Bacillus subtilis, respectively. The two strains showed greater growth in brain-heart infusion broth than in other growth media. Treatment of harvested apples with suspensions of either strain reduced the symptoms of anthracnose disease caused by two fungal pathogens, Colletotrichum gloeosporioides and Colletotrichum acutatum, and white rot disease caused by Botryosphaeria dothidea. Increased productions of amylase and protease by APEC136, and increased productions of chitinase, amylase, and protease by APEC170 might have been responsible for inhibiting mycelial growth. The isolates caused a greater reduction in the growth of white rot than of anthracnose. These results indicate that the isolates APEC136 and APEC170 are promising agents for the biocontrol of anthracnose and white rot diseases in apples after harvest, and suggest that these isolates may be useful in controlling these diseases under field conditions.     

The conflict detection and resolution in knowledge merging for image annotation

Semantic annotation of images is an important step to support semantic information extraction and retrieval. However, in a multi-annotator environment, various types of conflicts such as converting, merging, and inference conflicts could arise during the annotation. We devised conflict detection patterns based on different data, ontology at different inference levels and proposed the corresponding automatic conflict resolution strategies. We also constructed a simple annotator model to decide whether to trust a given piece of annotation from a given annotator. Finally, we conducted experiments to compare the performance of the automatic conflict resolution approaches during the annotation of images in the celebrity domain by 62 annotators. The experiments showed that the proposed method improved 3/4 annotation accuracy with respect to a naïve annotation system.     

Influence of university prestige on graduate wage and job satisfaction: the case of South Korea

ABSTRACT

Obtaining a tertiary degree no longer guarantees entry to the best occupational positions in today’s labour market. Success is no longer about ‘more’ education, but about ‘better’ education for university graduates. This study aims to understand whether university prestige in Korea accounts for occupational outcomes in both monetary and non-monetary aspects, such as salaries and job satisfaction. The study particularly focuses on the way different levels of university prestige are affected by gender. The fourth wave data from the Korean Education and Employment Panel were used, providing information from the results of a panel survey of university graduates in terms of their social and academic background and job employment status. Results show that university prestige continues to matters in occupational outcomes in particular, for wage, but it is not significant for job satisfaction. The effect is more significant among male graduates than among female graduates.     

Rates and Predictors of Counseling Center Use Among College Students of Color

A comparison of institutional enrollment data and counseling center service utilization data at 66 universities showed that neither ethnic minority students nor European American students under‐ or overutilized counseling services (Study 1). Data from Study 2 examining students in the general campus bodies at 45 institutions indicated that utilization of counseling center services for students of various ethnicities was predicted by the ethnic composition of the counseling center staff. Among students of color, utilization of campus counseling services was predicted by greater psychological distress, less family support, and a history of previous psychological problems.     

Predictors of Localism in Public Television Scheduling in the United States

In the United States, public television claims itself a champion of localism. A prime-time schedule analysis of the Public Broadcasting Service's (PBS) member stations establishes localism scores, and discriminant analysis finds variables that predict differences among stations. Market level variables (income, education, ethnic diversity, geographic component) and organizational level variables (Community Service Grants, membership funding, overall revenue) affect localization of member stations' schedules. This is the first empirical study utilizing a structural operationalization of localism, inclusive of all programming genres, applied to PBS member stations.     

Pre-movement and during-movement visual search behaviours vary depending on expertise and anxiety levels in ten-pin bowling

This study investigated the pre-movement and during-movement visual search behaviour (VSB) and quiet eye (QE) of 11 elite versus 10 sub-elite ten-pin bowlers, performing under high-anxiety and low-anxiety conditions. Pre-movement and independent of expertise, bowlers had more fixations and directed them to more locations when performing under high-anxiety compared with low-anxiety. Elite bowlers fixated at more locations closer to the pins in pre-movement than during-movement, with pre-movement QE occurring mostly at the breakpoint and middle arrows. During movement however, bowlers fixated closer to the foul-line at the middle and right dots and arrows, with during-movement-QE occurring at the middle dots and right arrows. Elite bowlers recorded longer QE durations during-movement rather than pre-movement, albeit a later onset during the longish five-step approach prior to ball release compared with sub-elite bowlers. Our results suggest that QE during-movement instead of pre-movement could be more pertinent in differentiating expertise during sporting tasks with a long movement phase and far-aiming target. The relevance of pre-movement or movement-QE in characterising expertise and performance could therefore be sport-dependent. This should be considered when investigating skilled action and developing training programs for skill acquisition.