A rejoinder to Sarangapani and Winch

A statistical relationship between student affect and student achievement is routinely observed—students who like a particular subject also tend to do well in that subject. Theory suggests that the underlying causality is a mutual influence relationship in which affect influences, and is influenced by, achievement. Published analyses, however, usually assume a unidirectional influence—affect influences achievement. To the extent that the latter assumption is an over‐simplification, as theory suggests it is, then current understandings of the importance of affect for achievement are probably in error to some degree. The analyses reported here take a position consistent with theory to model the underlying causality of the relationship between affect and achievement as bidirectional. To this end, the present analyses formulate a non‐recursive structural equation model which specifies affect and achievement as influences on each other. This model is estimated separately for each of 23 nations, 19 of which are members of the Organisation for Economic Cooperation and Development (OECD). All 23 nations participated in the OECD‐sponsored Programme for International Student Assessment (PISA), a programme whose focus is national achievement levels in populations of 15‐year‐olds. The results of these analyses lend support to the proposition that affect and performance exist in a mutual influence relationship, though the nature of this relationship varies between countries.     

A ‘whole-school/community development’ approach to preventing and countering bullying: the Erris Anti-Bullying Initiative (2009–2011)

This paper describes how a ‘whole-school/community development’ anti-bullying programme was designed, implemented and evaluated in an initiative in Erris, Co. Mayo, Ireland, involving local primary and post-primary schools and community groups. Students from seven participating schools (five primary, two post-primary) completed modified versions of the Olweus Bully/Victim Questionnaire both prior to and following programme implementation. Thereafter, there were reductions in students' reports of involvement in bully/victim problems and increases in their reports of feelings about bullying and countering bullying that were consistent with an anti-bullying ethos. The sizes of these effects were modest, in some cases perhaps due to the significantly low incidence of students' involvement in bully/victim problems prior to the programme. This model is in continued use in Erris, and in its further development it is intended to seek out opportunities to implement and evaluate it in other locations.     

Rewards and Costs of Faculty Involvement in Intergenerational Service-Learning

Service-learning (S-L) has been regarded as a relatively well-established and effective teaching pedagogy. Students who participate in S-L are more likely to learn more efficiently, more effectively, and remember more of what they have learned than their counterparts. Current studies have been done on the experiences of students in service-learning and implementing S-L components. Other research has focused on the barriers to conducting effective S-L. However, no qualitative studies have examined a faculty component of S-L. Also, there have been few studies or discussions delineating faculty perceptions or experiences in S-L. An e-mail survey supplemented with personal interviews was utilized in an effort to understand experiences of participating in S-L. Of specific interest were faculty perceptions of the costs and rewards in employing S-L in gerontology-related curriculums.     

Comprehension of Health-related Written Materials by Older Adults

This study examined how Flesch Reading Ease and text cohesion affect older adults' comprehension of common health texts. All older adults benefited when high Flesh Reading Ease was combined with high cohesion. Older adults with small working memories had more difficulty understanding texts high in Flesch Reading Ease. Additionally, older adults with low verbal ability or older than 77 years of age had difficulty understanding texts high in text cohesion but low in Flesch Reading Ease. These results imply that writers must increase Flesch Reading Ease without disrupting text cohesion to ensure comprehension of health-related texts.     

MICROCOMPUTERS AND THE ELDERLY: NEW DIRECTIONS FOR SELF‐SUFFICIENCY AND LIFE‐LONG LEARNING

Since the development of the microcomputer in the early 70's, computer technology has expanded into the eductional lives of increasing numbers of persons. Computers, once seen only in wealthy industries, are now nearly as common as pencils and paper in our nations' schools. In addition to the rapid development of computer training programs at the post secondary level, the proliferation of such programs is now manifest at the secondary, elementary, and even preschool levels. While computers appear to offer a great deal of educational potential for our youth, their benefits have not as yet been explored among older adults.     

Usability Testing of BusinessThinkingTM e-Learning CD-ROMs with Older Adults

BusinessThinking^TM is a computer-based e-learning package designed to teach technology skills and business information to adults, ages 50–69, who remain in the workforce. This article outlines results from usability testing for the material on using technology applications (Microsoft Word, PowerPoint, Excel and the Internet), and career development (career management and preretirement planning. In Study 1, a usability test was conducted to ensure that the material was user-friendly. In Studies 2 and 3, the PowerPoint and career development materials were redesigned according to the findings from Study 1. Results indicated that the redesign was effective in increasing navigation of the material.     

A MODULAR COURSE APPROACH TO IN‐SERVICE AND PRE‐SERVICE TRAINING IN GERONTOLOGY

In order to meet both in‐service and pre‐service training needs in gerontology, North Country Community College has developed an innovative one‐year certificate program. Under the assumption that persons working with the aged in a rural area must have a diverse group of skills to draw upon, the gerontology certificate stresses course work in: communication skills, culture variability, gerontology knowledge, management skills, and service skills. The curriculum approach taken is that of competency based education, with most of the skills courses put into a modular course format. After the first year of the certificate, 53% (N = 65) of the students in the certificate courses are adults or community professionals turning to this community college program to upgrade skills or acquire new ones. This certificate is beginning to meet the training needs in a rural area that were only previously addressed by occasional workshops for the human service practitioner.     

Empirical observations on the session timeout threshold

The World Wide Web is a popular “tool” for companies. It can be used as a method of communication between companies and their customers; it also allows organizations to setup virtual storefronts that can be accessed by customers from all over the world. The ability to understand customers’ behavior is extremely important as companies strive to increase the usability and profitability of their web service. The concept of a session is a popular unit of measurement used to analyze recorded information. However, this concept is currently rather abstract and lacks definition. How we measure a session is a fundamental question for web services utilizing this concept. Currently, this question has no real answer. This paper presents a session timeout threshold model based on empirical observations as an initial answer to this question. The model seeks to provide accurate session data with respect to individual web services.     

A social status perspective of network utility over electronic channels in academic communities

Early research on the social implications of e-mail has promoted the role of electronic communication channels in fostering social equality and reducing gaps between the social classes. Follow-up studies, however, suggest that people continue to rely on social cues in electronic communication as a way of dealing with uncertainties and reducing feelings of discomfort associated with unfamiliar contexts. Based on a review of the Social Cognitive Theory, social status and electronic communication literatures, along with the results of a previous qualitative study, we propose a formal model that indicates how self-perceptions of social status are related to the use of e-mail and the acquisition of social resources over electronic channels. The model is tested using data collected from 206 faculty members in a major U.S. university. The empirical results support the proposed model implying that self-perceptions of social status influence social assertiveness, which in turn reinforces the use of e-mail to seek help and acquire social resources from others. The use of e-mail for the acquisition of social resources is associated with a socially diverse network whose contacts are perceived to acquire valuable information and to extend instrumental support for career development. Implications are drawn for both theory and practice.     

Ultrafast microfluidics using surface acoustic waves

We demonstrate that surface acoustic waves (SAWs), nanometer amplitude Rayleigh waves driven at megahertz order frequencies propagating on the surface of a piezoelectric substrate, offer a powerful method for driving a host of extremely fast microfluidic actuation and micro∕bioparticle manipulation schemes. We show that sessile drops can be translated rapidly on planar substrates or fluid can be pumped through microchannels at 1–10 cm∕s velocities, which are typically one to two orders quicker than that afforded by current microfluidic technologies. Through symmetry-breaking, azimuthal recirculation can be induced within the drop to drive strong inertial microcentrifugation for micromixing and particle concentration or separation. Similar micromixing strategies can be induced in the same microchannel in which fluid is pumped with the SAW by merely changing the SAW frequency to rapidly switch the uniform through-flow into a chaotic oscillatory flow by exploiting superpositioning of the irradiated sound waves from the sidewalls of the microchannel. If the flow is sufficiently quiescent, the nodes of the transverse standing wave that arises across the microchannel also allow for particle aggregation, and hence, sorting on nodal lines. In addition, the SAW also facilitates other microfluidic capabilities. For example, capillary waves excited at the free surface of a sessile drop by the SAW underneath it can be exploited for micro∕nanoparticle collection and sorting at nodal points or lines at low powers. At higher powers, the large accelerations off the substrate surface as the SAW propagates across drives rapid destabilization of the drop free surface giving rise to inertial liquid jets that persist over 1–2 cm in length or atomization of the entire drop to produce 1–10 μm monodispersed aerosol droplets, which can be exploited for ink-jet printing, mass spectrometry interfacing, or pulmonary drug delivery. The atomization of polymer∕protein solutions can also be used for the rapid synthesis of 150–200 nm polymer∕protein particles or biodegradable polymeric shells in which proteins, peptides, and other therapeutic molecules are encapsulated within for controlled release drug delivery. The atomization of thin films behind a translating drop containing polymer solutions also gives rise to long-range spatial ordering of regular polymer spots whose size and spacing are dependent on the SAW frequency, thus offering a simple and powerful method for polymer patterning without requiring surface treatment or physical∕chemical templating.