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Biomedical subjects

B F Richards

Publications and source records attributed to B F Richards.

At least 19 recordsLinked to original sources

How medical students and residents describe the roles and characteristics of their influential clinical teachers.

PURPOSE: This study sought to identify students' perceptions about characteristics of faculty who had positively influenced their clinical education and to determine whether the students' perceptions matched those published for residents. METHOD: On exit surveys in 1997 and 1998, students graduating from Baylor College of Medicine were asked to list clinical faculty who had "significantly and positively influenced their clinical education" and to describe that influence. Using codes derived from Ullian's earlier 1994 study regarding residents' perceptions, the authors classified 1,153 written descriptions that expressed a single characteristic or teacher attribute into five roles: person, physician, supervisor, teacher, and unspecified (global). For each role, categories expressing similar characteristics were grouped into clusters. Although one author coded all descriptions, interrater reliability (.93) was determined by having an assistant code a set of randomly selected descriptions. RESULTS: The medical students ranked characteristics of the teacher role highest. In contrast, Ullian's residents ranked characteristics of the supervisor role highest. CONCLUSION: Medical students and residents differ substantially in their perceptions of the roles and characteristics of their influential clinical teachers. The results in this study corroborate Stritter's learning vector theory. Thus, learners' perceptions of the value of their teachers' behaviors change during their professional development. These perceptual changes may explain why medical students and residents assess the same faculty's teaching very differently. These results also support the need to prepare clinical faculty differently for working with medical students as compared with residents.

Humans↗

Are medical students ready to provide HIV-prevention counseling?

PURPOSE: To determine whether medical students were prepared to assess risk and counsel patients about prevention of HIV infection, and whether HIV-related experience produced better knowledge and counseling skills. METHOD: In 1995, students at four North Carolina medical schools interviewed a standardized patient portraying a young woman concerned about HIV infection. The standardized patient recorded whether students asked risk-behavior questions and provided risk-reduction advice. A 21-item questionnaire assessed the students' knowledge of HIV testing and prevention. Students indicated whether they had had experience in educational settings related to HIV or STDs. RESULTS: 415 students completed both the patient interview and the questionnaire. Many failed to ask the patient about several HIV-risk behaviors. Although nearly all (98%) inquired about condom use, fewer than two thirds asked about the patient's history of STDs, number of sexual partners, or specific sexual practices. Most students advised the patient to use condoms. The average score on the knowledge test was 79%; 70% of students confused anonymous with confidential testing, more than half overestimated the risk of HIV transmission from a needle stick, and nearly one in ten did not know how to use a condom. Educational exposures did not produce significantly better risk assessment, counseling information, or knowledge scores. CONCLUSION: A majority of experienced medical students did not assess several important risk factors of a patient concerned about HIV infection, and many would have provided incorrect information related to HIV testing and prevention of infection. Patient contact in traditional clinical settings did not influence prevention knowledge or behavior. More innovative methods are needed to train students in HIV-infection prevention and counseling.

Counseling↗

Ratings of students' performances in a third-year internal medicine clerkship: a comparison between problem-based and lecture-based curricula.

PURPOSE: To compare clinical performances in a third-year medicine clerkship between studies from a problem-based learning (PBL) curriculum and students from a traditional, lecture-based learning (LBL) curriculum. METHOD: The study participants were 88 PBL students and 364 LBL students rotating through a common third-year internal medicine clerkship at the Bowman Gray School of Medicine at Wake Forest University, classes of 1991-1995. Faculty and housestaff assessed the students' performances using four clinical rating scales. The student also completed the medicine student ("shelf") test of the National Board of Medical Examiners (NBME). RESULTS: On average, the PBL students received significantly higher ratings from housestaff and faculty on all four rating scales. No difference in scores on the NBME medicine shelf test was observed. CONCLUSION: The results support the hypothesis that preclinical PBL curricula as found at the Bowman Gray School of Medicine may enhance third-year students' clinical performances.

Achievement↗

Non-cognitive characteristics of medical students: entry to problem-based and lecture-based curricula.

The effectiveness of problem-based learning (PBL) versus lecture-based learning (LBL) continues to be debated all over the world. These arguments have often been based on students' cognitive measures of performance. Little emphasis has been placed on non-cognitive factors that may directly or indirectly affect the medical school performance of students in either curriculum. The purpose of this study was to (1) document possible differences in student cognitive and non-cognitive characteristics at entry between the two curricula and (2) to explore the relationships that exist between cognitive and non-cognitive factors. Data were obtained from three medical school classes (n = 281). The results indicate that students who entered the PBL curriculum at this medical school had higher total Medical College Admission Test and undergraduate grade point average than students who entered the LBL curriculum. Students who entered the PBL curriculum were also more self-sufficient and were more likely to do well in individualistic and less structured settings. There were no strong correlations between cognitive and non-cognitive variables. Before conclusions can be drawn about the effectiveness of either PBL or LBL curricula, we need to document patterns in entry characteristics to control for a priori differences that affect student performance.

Adult↗

Development of a measure of medical faculty attitudes toward clinical evaluation of students.

PURPOSE: This research involved the development, and in particular the evaluation of the reliability, of scales to measure medical faculty attitudes toward clinical evaluation (ACE) of medical students. The intent was to create measures that yield reliable data and have practical utility in medical education research and faculty development. METHOD: A systematic, eight-step scale development protocol was used to create the instrument. In early 1993 factor analysis was used on data from 217 clinical faculty at four medical schools to refine the measures. Internal consistency and test-retest reliability analyses were performed. Analyses were also done to determine whether the attitude scores were influenced by such faculty demographic attributes as employing medical school, gender, age, tenure track status, academic rank, or academic department. RESULTS: An initial pool of 52 items was reduced to 30 items based on iterative reliability studies. Factor analysis on the 30 items yielded two scales: (1) Quality of Evaluation Procedures, 12 items, alpha = .81; and (2) Content of Departmental Evaluations, eight items, alpha = .85. Test-retest reliabilities (12 weeks) for the scales were .67 and .74, respectively. Faculty demographics did not influence attitudes about the quality of evaluation procedures. However, family physicians showed a slightly more positive attitude toward the content of departmental evaluations than did physicians in five other medical specialties. CONCLUSION: The goal of developing reliable measures of faculty attitudes toward clinical evaluation of medical students has been achieved. With baseline reliabilities established, future research should assess the validity and utility of the scales, especially in the context of clinical practice examinations.

Analysis of Variance↗

Residents' perceptions of their teachers: facilitative behaviour and the learning value of rotations.

Despite changes in modern medicine the role of the clinical teacher remains central to medical residents' education and rotations continue to be their dominant educational context. Residents have strong positive feelings for clinical teachers who are perceived as interested in teaching and for those rotations that provide a balance of educational opportunities and patient care responsibilities. Research in residency education has focused on teacher behaviours used to teach medical residents clinical information or patient care skills but has neglected teacher behaviours used to facilitate effective learning relationships with residents. To explore the impact of clinical teachers' use of facilitative behaviours on residents' educational experience, we use concepts stemming from the psychologist Carl Rogers' work previously shown to be associated with positive learning outcomes--empathy, unconditional positive regard, and congruence. These constructs are measured by the use of the four scales of the Barrett-Lennard Relationship Inventory (BLRI)--level of regard, unconditionality of regard, congruence and empathy. Our study measures the correlation between residents' perceptions of clinical teachers' use of facilitative behaviours and residents' evaluation of the learning value of rotations. Thirty-three residents completed the BLRI on a different clinical teacher for each of six monthly rotations. A total of 158 surveys were returned. There were strong positive correlations between three of the BLRI variables and residents' perception of the learning value of rotations. Potential uses of these findings are discussed.

Attitude of Health Personnel↗

A comparison between students in problem-based and traditional curricula at the same medical school: preparing for the NBME Part I.

Eighteen of 22 students in a problem-based curriculum and 62 of 79 students in a traditional curriculum at the same medical school completed a survey 10 weeks after completing Part I of the National Boards. The survey asked students to report the average time they had spent each week during the first 2 years of medical school preparing for the Part I examination. Students were also asked to rate the usefulness of a variety of learning resources. The purpose of the survey was to compare the preparation activities of students in the two curricula. The results of the survey revealed that students in the problem-based curriculum tended to study many more hours for Part I than did students in the traditional curriculum, especially during their second year. The results also found problem-based curriculum students tended to rate textbooks and the PreTest Series as more valuable than did their peers in the traditional curriculum. The effects of the format and goals of the two curricula on the students' preparation activities are explored.

Analysis of Variance↗

The consistency of students' self-assessments in short-essay subject matter examinations.

This longitudinal study compares the accuracy of self-assessments of 22 students across four examinations during their first 2 years of medical school. The four examinations used a similar short-essay format and covered many of the same basic science disciplines at similar levels of difficulty. Immediately after answering an average of 20 questions on each examination, students predicted their performance on those questions. After assigned subject matter experts had scored the questions, the differences between students' predictions and the experts' scores were calculated for each question. The degree to which students had over- and underestimated their performance across all questions was determined by separately averaging all positive and negative differences between students' and experts' assessments on each examination. The results of the study indicated that accuracy in self-assessment improved from examination 1 to examination 3 (with less overestimation) and dropped on examination 4 (with more underestimation). The results revealed no relationship between self-assessment estimations and actual scores received. Furthermore, the self-assessment estimations tended to be statistically correlated between contiguous examinations (i.e., examinations 1 and 2, 2 and 3, etc.) but not between non-contiguous ones (i.e., examinations 1 and 3, etc.). The results of the study are interpreted to suggest that the students in the study have a self-assessment tendency towards over- or underestimation that is somewhat stable but that gradually evolves over time with experience, maturity and self-assessment practice. The most frequent direction of change is towards decreased overestimation and increased underestimation. These results are consistent with the findings of other recent longitudinal self-assessment studies.

Clinical Competence↗

Scoring the objective structured clinical examination using a microcomputer.

The objective structured clinical examination (OSCE) is being used increasingly to assess students' clinical competence in a variety of controlled settings. The OSCE consists of multiple stations composed of a variety of clinically relevant problems (e.g. examining simulated patients, diagnosing X-rays, etc.) Generally, three types of performance data are collected: answers to multiple choice or true/false questions, written short answers, and performance check-lists completed by observers. In most OSCEs these student performance measures are scored by hand. This is time-consuming, increases the probability of mistakes and reduces the amount of data available for analysis. This paper describes a method of computer scoring OSCEs with over 100 students using statistical and test-scoring software regularly used for multiple choice examinations. During the examination, students, markers and raters code answers and performance data directly on optical mark-sheets which are read into the computer using an optical mark reader. The resultant computer data can be efficiently scored and rescored, grouped into different types of subscales, weighted to reflect questions' relative importance, and easily printed in a variety of report formats.

Clinical Competence↗

Is it worth it? A look at the costs and benefits of an OSCE for second-year medical students.

For the past two years, the Bowman Gray School of Medicine has used an Objective Structured Clinical Exam (OSCE) to measure the performance of 117 first- and second-year medical students at the end of introductory courses on differential and physical diagnosis. Given the surprisingly high costs of conducting the OSCE ($1300 for supplies and 527 person-hours of donated time), data about the format's perceived benefits were collected. All of the faculty involved in the examination who responded to a questionnaire (80%) reported that it was worth the time they had volunteered to evaluate students by observation and that the format should be used in the future. The majority of student examinees also reported that the OSCE format was appropriate for the course and should continue to be used.

Clinical Medicine↗