Communication Patterns of African American Girls and Boys from Low-Income, Urban Backgrounds

This study investigated gender effects on the conversational strategies used among 106 African American children ( mean age = 7 years) from urban, low-income family backgrounds. Same- and mixed-gender pairs of children from the same grade level in an inner-city school were provided with toy bear puppets and asked to play together for 5 min. Conversations were coded using Leaper's Psychosocial Processes Coding Scheme, which classifies communication acts as either collaborative, controlling, informing, obliging, or withdrawing. Girls and boys were more similar than different. However, gender-related variations were found. Boys were more likely than girls to use controlling acts and domineering exchanges in same-gender pairs but not in mixed-gender pairs. Girls were more likely than boys to use a combination of collaborative and informing acts. For partner gender effects we found that controlling acts and domineering exchanges were less likely — whereas informing acts were more likely — to take place when children were matched with a girl than when they were matched with a boy. Findings replicate many of the gender effects on communication style reported in a prior study (Leaper, 1991) that used a similar procedure and coding strategy with a sample of middle-income children from mostly European American backgrounds.     

An Analysis of a Course-Oriented Electronic Mailing List

To understand how course-oriented e-mail lists contribute to the learning experience and, more importantly, to understand how to improve the value of listservs in courses, it is important to critically examine their behavior under actual classroom conditions. We present an empirical study of listserv usage in a sophomore-level computer science data structures class. This study provides experimental evidence that: the list was an important information source for students, students were major contributors in answering the questions of others, students generally provided correct answers instead of incorrect help, and traffic on the list was driven by concrete tasks the students had to perform. As a result, the listserv was an effective tool for peer-to-peer learning, not just a mechanism for faculty to broadcast announcements. After presenting the study and results, we conclude by describing the lessons we learned on how to make a class-oriented listserv a successful environm ent for peer-to-peer learning, as well as the concomitant pitfalls.     

Are the Measurements of Attention Allocation and Perceived Exertion Trustworthy?

Two studies examined the trustworthiness of commonly used measurement scales for ratings of perceived exertion (RPE) and state attentional focus (SAF) during exercise. In Study 1, participants (N = 24, 14 female) performed a treadmill graded-exercise test. The order of scale presentation during the task was manipulated (i.e., RPE followed by SAF or vice versa). In Study 2 the same order manipulation was used while participants (N = 70, 36 female) performed a stepping task for three consecutive trials. Additionally, time intervals between scale presentations were manipulated (i.e., 30 sec, 60 sec, or 90 sec) and counterbalanced between trials. Non-significant order effects of RPE and SAF emerged in both studies; however, a more frequent presentation of the two scales (30 sec and 60 sec) yielded higher RPE scores and increased associative attentional focus than a less frequent presentation (90 sec). The authors recommend minimizing measurement interruptions during the measurement process.     

Building the body: Active learning laboratories that emphasize practical aspects of anatomy and integration with radiology

Active learning exercises were developed to allow advanced medical students to revisit and review anatomy in a clinically meaningful context. In our curriculum, students learn anatomy two to three years before they participate in the radiology clerkship. These educational exercises are designed to review anatomy content while highlighting its relevance to the study of radiology. Laboratory exercises were developed using inexpensive materials in the form of hands‐on stations designed for use by students working together in small groups. Station exercises include model building, exploring relevant radiological imaging, and practicing clinical techniques. Students are encouraged to move from abstract conceptualization of the anatomy using models to applying knowledge to living tissues by using a portable ultrasound to explore superficial anatomy on each other. Stations are designed to integrate knowledge and reemphasize concepts in different contexts, so that upon completion students have a reinforced understanding of the three‐dimensional anatomy of the region in question, the appearance of the anatomy on radiological images, and an appreciation of the relevance of the anatomy to radiological procedures. Anat Sci Educ, 2010 © 2010 American Association of Anatomists.