Undergraduates’ understanding of cardiovascular phenomena

2002 ◽  
Vol 26 (2) ◽  
pp. 72-84 ◽  
Author(s):  
Joel A. Michael ◽  
Mary Pat Wenderoth ◽  
Harold I. Modell ◽  
William Cliff ◽  
Barbara Horwitz ◽  
...  

Undergraduates students in 12 courses at 8 different institutions were surveyed to determine the prevalence of 13 different misconceptions (conceptual difficulties) about cardiovascular function. The prevalence of these misconceptions ranged from 20 to 81% and, for each misconception, was consistent across the different student populations. We also obtained explanations for the students’ answers either as free responses or with follow-up multiple-choice questions. These results suggest that students have a number of underlying conceptual difficulties about cardiovascular phenomena. One possible source of some misconceptions is the students’ inability to apply simple general models to specific cardiovascular phenomena. Some implications of these results for teachers of physiology are discussed.

2017 ◽  
Vol 12 (2) ◽  
pp. 178 ◽  
Author(s):  
Stephanie Krueger

A Review of: Carroll, A. J., Corlett-Rivera, K., Hackman, T., & Zou, J. (2016). E-book perceptions and use in STEM and non-STEM disciplines: A comparative follow-up study. portal: Libraries and the Academy, 16(1), 131-162. https://doi.org/10.1353/pla.2016.0002 Abstract Objective – To compile a set of usability and collection development suggestions and to examine a possible statistical correlation between visiting the physical library, online resource use, and e-book use. Design – Online questionnaire survey. Setting – Major public research university in Maryland, United States of America. Subjects – 47,209 faculty, students, and staff. Methods – This survey is a follow-up to a similar 2012 study at the same institution. Survey respondents completed 14 multiple-choice and up to 8 open-ended questions about academic e-book discovery, perception, and usage patterns for both STEM and non-STEM respondents using the Qualtrics online research platform. Seven of eight open-ended questions were conditional (i.e., dependent on answers to multiple-choice questions), thus the number of questions answered by respondents could vary. The survey was available from October 1 to November 22, 2014, and promoted across a variety of communication channels (email, library website, social media, print flyers and handouts). Incentives for completing the survey included one iPad Mini and eight U.S. $25 Amazon gift cards. Main Results – 1,911 (820 STEM and 1,091 non-STEM) self-selected students, faculty, and staff from a total campus population of 47,209 faculty, students, and staff (4.2% response rate) participated in the survey, excluding 277 additional responses representing library personnel (70) and individuals not affiliated with the institution (207). 64% of respondents indicated more e-book use than three years before, with only 21.9% of respondents noting they never use e-books for academic purposes compared to 31% in 2012. 32.5% of respondents noted daily or weekly use of e-books for scholarly pursuits, with undergraduates reporting the most frequent use: 38.6% daily/weekly use versus 37.2% for graduate students, 16.2% for faculty, and 14.2% for staff. 38% of respondents reporting daily/weekly use were from STEM disciplines; 31.3% were from non-STEM fields. Computers, not e-readers, were the primary devices used for accessing e-books: 72.5% of respondents reported using laptops or desktops to this end versus tablets, 37.9%; mobile phones, 36.7%; Kindles, 25.6%; Nooks, 5.9%; and other e-readers, 3.3%. Top “mixed device access” responses were tablet/mobile phone/computer (98 responses); mobile phone/computer (93 responses); and tablet/computer (81 responses). The top three discovery tools respondents reported using for finding e-books were commercial sites (35.9%), free websites (26.8%), and the library website (26.2%). A weak-positive Spearman’s rho rank correlation of 0.25 provides some evidence that respondents who visit the library often are likely to use online resources and e-books. 35% of respondents reported they use e-books online “most of the time,” and 67% of respondents indicated they print out e-book content for use. Responses to the question “What, if anything, would make you more likely to use e-books for academic purposes?” included easier access via the library website (48% of respondents), better functionality for highlighting/annotating (44%), reduced cost (43.2%), easier downloading (38.5%), more e-books in area of research interest (37.3%), more textbooks (37.2%), and ownership of a dedicated e-reader (35.6%). In 2012, 52% of respondents reported never having downloaded an e-book for offline use. This percentage dropped notably in this study, with only 11.5% of respondents indicating they had never downloaded for later use. Conclusion – While this study indicates both STEM and non-STEM respondents at this institution are increasingly using e-books, preferences for electronic versus print format varied according to content type and type of user (e.g., STEM or non-STEM, undergraduate or graduate, student/faculty/staff). Key recommendations for usability and collection development include: improving discovery and awareness mechanisms, purchasing some content (e.g., references works, style guides) in e-format while ensuring multiple simultaneous use, taking advantage of print plus electronic options to serve users with different format preferences, and encouraging vendors to allow digital rights management free downloading and printing.


Author(s):  
Paul S. Steif ◽  
Anna Dolla´r

The goal of Statics instruction should be its application to gaining insight into, and to designing, engineering systems. The typical textbook experience, relying strongly on mathematical manipulations, is not adequate to preparing students to model mechanical systems. Experienced users of mechanics rely on an intuitive, even visceral, sense for the forces which are present in mechanical systems, and how they combine to maintain the system in equilibrium (or produce its motion). With the observation that students do not readily perceive forces between inanimate objects, we have reorganized Statics instruction to focus initially on situations in which they can experience forces directly: forces exerted by hand or that are evident from motion or deformation. Within this overall philosophy, we developed learning modules that address discrete concepts with which students traditionally have difficulty. Learning modules include simple objects to manipulate, PowerPoint presentations, and multiple-choice questions relevant to the concepts that the modules convey. In this paper we identify a series of important concepts in Statics, and we offer several excerpts from new or improved Learning Modules, focusing on how the Learning Module seeks to address students’ conceptual difficulties.


2003 ◽  
Vol 30 (1) ◽  
pp. 75-78 ◽  
Author(s):  
Christopher L. Aberson ◽  
Dale E. Berger ◽  
Michael R. Healy ◽  
Victoria L. Romero

In this article, we describe and evaluate a Web-based interactive tutorial used to present hypothesis testing concepts. The tutorial includes multiple-choice questions with feedback, an interactive applet that allows students to draw samples and evaluate null hypotheses, and follow-up questions suitable for grading. Students either used the interactive tutorial (n = 15) or completed a standard laboratory assignment (n = 10) covering the same topics. Students who used the tutorial performed better (p =.06) on a quiz than students who completed the standard laboratory, supporting the effectiveness of this freely available online tutorial. A second group of students (n = 112) who did not participate in the assessment overwhelmingly rated the tutorial as easy to use, clear, and useful.


1988 ◽  
Vol 33 (2) ◽  
pp. 112-117 ◽  
Author(s):  
A.C. Carr ◽  
A. Ghosh ◽  
I.M. Marks

Twenty phobic outpatients were treated by 9 weekly “interviews” at the console of a desk computer. Using a conversational style and multiple choice questions, the computer assessed the symptoms and agreed a hierarchy of self-exposure tasks. Each week the patient was given a diary sheet of tasks to practise daily. At his next visit his progress and motivation were assessed, and if he was succeeding he was encouraged to accept progressively more difficult tasks. This group was compared with a group of 20 patients (matched for age, sex and type of phobia) treated conventionally by a therapist in the preceding year. Progress was measured on standardized scales (both self- and clinician-rated). The two groups showed significant improvement on all the scales, and 75–80% of each group were much improved (scores reduced by 50%). The therapist treated group tended to be more severely ill at entry and to show greater improvement during treatment. Improvement was maintained at 6 month follow-up in both groups.


Informatica ◽  
2017 ◽  
Vol 28 (4) ◽  
pp. 609-628
Author(s):  
Ali Fahmi ◽  
Cengiz Kahraman

2017 ◽  
Vol 32 (4) ◽  
pp. 1-17 ◽  
Author(s):  
Dianne Massoudi ◽  
SzeKee Koh ◽  
Phillip J. Hancock ◽  
Lucia Fung

ABSTRACT In this paper we investigate the effectiveness of an online learning resource for introductory financial accounting students using a suite of online multiple choice questions (MCQ) for summative and formative purposes. We found that the availability and use of an online resource resulted in improved examination performance for those students who actively used the online learning resource. Further, we found a positive relationship between formative MCQ and unit content related to challenging financial accounting concepts. However, better examination performance was also linked to other factors, such as prior academic performance, tutorial participation, and demographics, including gender and attending university as an international student. JEL Classifications: I20; M41.


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