A comparison of the physiological response to simulated altitude exposure and r-HuEpo administration.

Concerns have been raised about the morality of using simulated altitude facilities in an attempt to improve athletic performance. One assumption that has been influential in this debate is the belief that altitude houses simply mimic the physiological effects of illegal recombinant human erythropoietin (r-HuEpo) doping. To test the validity of this assumption, the haematological and physiological responses of 23 well-trained athletes exposed to a simulated altitude of 2650-3000 m for 11-23 nights were contrasted with those of healthy volunteers receiving a low dose (150 IU x kg(-1) per week) of r-HuEpo for 25 days. Serial blood samples were analysed for serum erythropoietin and percent reticulocytes; maximal oxygen uptake (VO2max) was assessed before and after r-HuEpo administration or simulated altitude exposure. The group mean increase in serum erythropoietin (422% for r-HuEpo vs 59% for simulated altitude), percent reticulocytes (89% vs 30%) and VO2max (6.6% vs -2.0%) indicated that simulated altitude did not induce the changes obtained with r-HuEpo administration. Based on the disparity of these responses, we conclude that simulated altitude facilities should not be considered unethical based solely on the tenet that they provide an alternative means of obtaining the benefits sought by illegal r-HuEpo doping.     

A Liberal Arts Education: Global Trends and Challenges

The debate about the effectiveness of the liberal arts curriculum is centuries old, but recent financial and social pressures have placed the survival of the liberal arts in the United States at even greater risk. Using Kimball's (1995) notion of the oratorical and philosophical traditions of liberal education, this article first identifies the critical importance of balancing breadth and depth in the curriculum before honing in on breadth as being in particular danger in the current climate. After analyzing the major threats to breadth in American higher education, the article looks overseas to find a new case for the value of breadth in the curriculum. It focuses on Hong Kong's university system, where a large-scale, multiyear project is underway to graft a fourth year of general education onto a three-year model of discipline- or profession-specific training. The resulting contrast between American institutions discarding curricular breadth while foreign universities rediscover it is telling. This topic has particular relevance for Christian colleges and universities as they seek the holistic development of their students.     

Improving Language-Focused Comprehension Instruction in Primary-Grade Classrooms: Impacts of the Let’s Know! Experimental Curriculum

This quasi-experimental study was designed to test the impacts of a curriculum supplement, Let’s Know!, on the quantity and quality of language-focused comprehension instruction in pre-kindergarten to third grade classrooms. Sixty classrooms (12 per each of pre-K to grade 3) were enrolled in the study, with 40 teachers assigned to implement one of two versions of the experimental Let’s Know! curriculum and 20 assigned to a control condition, in which they maintained their typical language-arts curriculum. Classroom observations, 90 min in duration, were collected near the end of the first unit’s completion, about 4 to 5 weeks into the academic year. These observations were coded to examine impacts of Let’s Know! instruction on two outcomes: (a) teachers’ use of 18 language-focused comprehension supports and (b) general classroom quality. Study results using quantile regression showed that Let’s Know! teachers used a significantly higher number of language-focused comprehension supports during Let’s Know! instruction compared to the control teachers during language-arts instruction; the same finding was also true for general classroom quality. Quantile regression results showed the greatest differentiation in instructional quality, when comparing experimental and control teachers, for teachers in the middle of the distribution of general classroom quality. Study findings highlight the value of language-focused curricula for heightening comprehension-specific supports in pre-K to grade 3 settings.     

The relationship between motor skill proficiency and body mass index in preschool children

The purpose of this study was to examine the relationship between motor proficiency and body mass index (B/MI) in preschool children. Thirty-eight children ages 4-6 years had their BMI calculated and were assessed using the Movement Assessment Battery for Children-2 (MABC-2; Henderson, Sugden, & Barnett, 2007). These data were analyzed in two ways. The correlation between BMI and MABC-2 percentile ranks was calculated. Next, the groups were subdivided based on BMI status (high, M = 85.5; medium, M = 49.8; low, M = 10.8), and compared using t tests to determine if differences existed in MABC-2 percentile ranks. No significant relationship existed between MABC-2 and BMI percentile ranks (r = -.237). However significant differences in MABC-2 percentile ranks existed between high and low (p = .042), and high and medium (p = .043) groups. These results suggest that preschool children classified as overweight or obese may have lower motor proficiency than their normal weight and under weight peers. This study indicates there is a direct relationship between motor proficiency and BMI in the preschool population.     

Five Strategies for Optimizing Instructional Materials: Instructor- and Learner-Managed Cognitive Load

Educational Psychology Review - Researchers of cognitive load theory and the cognitive theory of multimedia learning have identified several strategies to optimize instructional materials. In this...     

Facebook as a mechanism for informal teacher professional learning in Indonesia

This study investigated the use of Facebook as a medium for, and process of, teachers’ informal professional learning regarding mathematical and pedagogical knowledge. Facebook responses to four inter-related posts about mathematics examples from Facebook users (N = 117) were captured and systematically analysed using content analysis. The data were examined through the lens of the five characteristics of the Effective Professional Development framework. The results identified different types of responses to the four Facebook posts including the opening of learning opportunities, rich mathematical and pedagogical discussions, respondents’ appreciations and direct impacts of the posts, as well as the acknowledgement of the misalignment between the proposed ideas and current teaching practices in Indonesia. These responses provided evidence that all five characteristics of the framework were apparent and highlighted the role of Facebook in supporting teacher informal professional learning within the Indonesian context. The limitations of such social networking-based research and implications for teacher professional development are provided.     

What’s in a word? Effects of morphologically rich vocabulary instruction on writing outcomes among elementary students

Reading and Writing - We examined effects of a 12-week, teacher-delivered, morphology-infused vocabulary intervention on writing outcomes for 4th and 5th grade U.S. students. The intervention (1)...     

Eight Ways to Promote Generative Learning

Educational Psychology Review - Generative learning involves actively making sense of to-be-learned information by mentally reorganizing and integrating it with one’s prior knowledge, thereby...     

Intergenerational exchange: undergraduate researchers’ learning and listening enhanced through older adults’ entertainment preferences

The purpose of this qualitative study was to provide an intergenerational exchange as undergraduate students taking an introductory Psychology of Aging course, interviewed and watched films with older adult participants (N = 13) residing in an assisted living community. The undergraduate researchers (N = 10) conducted and transcribed interviews, wrote about their perceptions of interviews and film viewing with older adults, and their instructor interviewed assisted living staff (N = 2) creating an assessment of participants, researchers, and staff. Researchers listened and learned from older adult’s words, thereby improving researchers’ understanding that older adults preferred in-person discussions over film viewing. Researchers learned from older adults’ words, as they began to understand that sexual content in today’s films may reduce entertainment viewing for youth and older adults. Older adults described television remotes and phones with frustration and researchers felt angst for their frustration. Findings suggested understanding and meaning for participants and researchers in this service learning intergenerational exchange generated through undergraduate research.