Integrity situational judgement test for medical school selection

Context: Despite their widespread use in medical school selection, there remains a lack of clarity on exactly what situational judgement tests (SJTs) measure. Objectives: We aimed to develop an SJT that measures integrity by combining critical incident interviews (inductive approach) with an innovative deductive approach. The deductive approach guided the development of the SJT according to two established theoretical models, of which one was positively related to integrity (honesty–humility [HH]) and one was negatively related to integrity (cognitive distortions [CD]). The Integrity SJT covered desirable (HH-based) and undesirable (CD-based) response options. We examined the convergent and discriminant validity of the Integrity SJT and compared the validity of the HH-based and CD-based subscores. Methods: The Integrity SJT was administered to 402 prospective applicants at a Dutch medical school. The Integrity SJT consisted of 57 scenarios, each followed by four response options, of which two represented HH facets and two represented CD categories. Three SJT scores were computed, including a total, an HH-based and a CD-based score. The validity of these scores was examined according to their relationships with external integrity-related measures (convergent validity) and self-efficacy (discriminant validity). Results: The three SJT scores correlated significantly with all integrity-related measures and not with self-efficacy, indicating convergent and discriminant validity. In addition, the CD-based SJT score correlated significantly more strongly than the HH-based SJT score with two of the four integrity-related measures. Conclusions: An SJT that assesses the ability to correctly recognise CD-based response options as inappropriate (i.e. what one should not do) seems to have stronger convergent validity than an SJT that assesses the ability to correctly recognise HH-based response options as appropriate (i.e. what one should do). This finding might be explained by the larger consensus on what is considered inappropriate than on what is considered appropriate in a challenging situation. It may be promising to focus an SJT on the ability to recognise what one should not do

Risky sexual behaviour of university students : perceptions and the effect of a sex education tool

The increasing HIV incidence amongst people aged 15-24 years and the reported gaps in sexeducation received at school and reported risky sexual behaviour in South Africa justifies the importance of this study. This study examines the risky sexual behaviour and perceptions among first-year students enrolled at Monash South Africa in South Africa. This four-phased mixed methods pilot study explored whether a sex-education intervention tool positively influenced risky sexual behaviour. Phase 1 used self-administered questionnaires to obtain quantitative and qualitative baseline data. In Phase 2 a sex-education intervention tool was designed to address identified gaps. In Phase 3 a prospective cohort of 12 mixed-gender students participated in the sex-education intervention sessions and was followed up a month later (Phase 4) to evaluate the effectiveness of the tool. Phase 1 participants (139) were between 18- 21 years. The level of sexeducation knowledge amongst the participants was low and of a poor quality; this could be a result of poor preparation at school. The results suggest the necessity of sex-education programmes for university students considering the low proportion of students entering university with basic sex education. Of the 139 participants, 27 were identified with risky sexual behaviour and considered for an intervention. The intervention participants felt more able to be responsible for their behaviour after the intervention. The participants reported that the sexeducation intervention tool influenced their risky sexual behaviour positively. This pilot intervention study can be adopted by universities interested in engaging their students about their sexual health and augmenting school-level interventions.http://www.ajol.info/journal_index.php?jid=153&ab=ajpherd2017-06-30am2016School of Health Systems and Public Health (SHSPH

Adiabatic Approximation in the Density Matrix Approach: Non-Degenerate Systems

We study the adiabatic limit in the density matrix approach for a quantum system coupled to a weakly dissipative medium. The energy spectrum of the quantum model is supposed to be non-degenerate. In the absence of dissipation, the geometric phases for periodic Hamiltonians obtained previously by M.V. Berry are recovered in the present approach. We determine the necessary condition satisfied by the coefficients of the linear expansion of the non-unitary part of the Liouvillian in order to the imaginary phases acquired by the elements of the density matrix, due to dissipative effects, be geometric. The results derived are model-independent. We apply them to spin 1/2 model coupled to reservoir at thermodynamic equilibrium.Comment: 24 pages (new version), accepted for publication in Physica

Meissner effect, Spin Meissner effect and charge expulsion in superconductors

The Meissner effect and the Spin Meissner effect are the spontaneous generation of charge and spin current respectively near the surface of a metal making a transition to the superconducting state. The Meissner effect is well known but, I argue, not explained by the conventional theory, the Spin Meissner effect has yet to be detected. I propose that both effects take place in all superconductors, the first one in the presence of an applied magnetostatic field, the second one even in the absence of applied external fields. Both effects can be understood under the assumption that electrons expand their orbits and thereby lower their quantum kinetic energy in the transition to superconductivity. Associated with this process, the metal expels negative charge from the interior to the surface and an electric field is generated in the interior. The resulting charge current can be understood as arising from the magnetic Lorentz force on radially outgoing electrons, and the resulting spin current can be understood as arising from a spin Hall effect originating in the Rashba-like coupling of the electron magnetic moment to the internal electric field. The associated electrodynamics is qualitatively different from London electrodynamics, yet can be described by a small modification of the conventional London equations. The stability of the superconducting state and its macroscopic phase coherence hinge on the fact that the orbital angular momentum of the carriers of the spin current is found to be exactly $\hbar/2$, indicating a topological origin. The simplicity and universality of our theory argue for its validity, and the occurrence of superconductivity in many classes of materials can be understood within our theory.Comment: Submitted to SLAFES XX Proceeding

Broadly sampled assessment reduces ethnicity-related differences in clinical grades

CONTEXT Ethnicity-related differences in clinical grades exist. Broad sampling in assessment of clinical competencies involves multiple assessments used by multiple assessors across multiple moments. Broad sampling in assessment potentially reduces irrelevant variances and may therefore mitigate ethnic disparities in clinical grades. OBJECTIVES Research question 1 (RQ1): to assess whether the relationship between students’ ethnicity and clinical grades is weaker in a broadly sampled versus a global assessment. Research question 2 (RQ2): to assess whether larger ethnicity-related differences in grades occur when supervisors are given the opportunity to deviate from the broadly sampled assessment score. METHODS Students’ ethnicity was classified as Turkish/Moroccan/African, Surinamese/ Antillean, Asian, Western, and native Dutch. RQ1: 1667 students (74.3% native Dutch students) were included, who entered medical school between 2002 and 2004 (global assessment, 818 students) and between 2008 and 2010 (broadly sampled assessment, 849 students). The main outcome measure was whether or not students received ≥3 times a grade of 8 or higher on a scale from 1 to 10 in five clerkships. RQ2: 849 students (72.4% native Dutch students) were included, who were assessed by broad sampling. The main outcome measure was the number of grade points by which supervisors had deviated from broadly sampled scores. Both analyses were adjusted for gender, age, (im)migration status and average bachelor grade. RESULTS Research question 1: ethnicityrelated differences in clinical grades were smaller in broadly sampled than in global assessment, and this was also seen after adjustments. More specifically, native Dutch students had reduced probabilities (0.87–0.65) in broadly sampled as compared with global assessment, whereas Surinamese (0.03–0.51) and Asian students (0.21–0.30) had increased probabilities of having ≥3 times a grade of 8 or higher in five clerkships. Research question 2: when supervisors were allowed to deviate from original grades, ethnicity-related differences in clinical grades were reintroduced. CONCLUSIONS Broadly sampled assessment reduces ethnicity-related differences in grades

MUM effect in medical education: taking into account the recipient and training setting

진남포 전경. 평양 모란대 “Town of Chinnampo. Botandai, Heijyo”. This image is posted publicly for non-profit educational use, excluding print publication. For additional information, please see http://digital.lafayette.edu/copyright for our Reproduction, Use, and Copyright Guidelines. Banque d’images : East Asia Image collection (EAIC)   The East Asia Image Collection is an open-access archive of digitized photographs, negatives, postcards, and slides of imperial Japan (1868-1945), its Asian empire (18..

Influence of response instructions and response format on applicant perceptions of a Situational Judgement Test for medical school selection

BACKGROUND: This study examined the influence of two Situational Judgement Test (SJT) design features (response instructions and response format) on applicant perceptions. Additionally, we investigated demographic subgroup differences in applicant perceptions of an SJT. METHODS: Medical school applicants (N = 372) responded to an online survey on applicant perceptions, including a description and two example items of an SJT. Respondents randomly received one of four SJT versions (should do-rating, should do-pick-one, would do-rating, would do-pick-one). They rated overall favourability and items on four procedural justice factors (face validity, applicant differentiation, study relatedness and chance to perform) and ease-of-cheating. Additionally, applicant perceptions were compared for subgroups based on gender, ethnic background and first-generation university status. RESULTS: Applicants rated would-do instructions as easier to cheat than should-do instructions. Rating formats received more favourable judgements than pick-one formats on applicant differentiation, study-relatedness, chance to perform and ease of cheating. No significant main effect for demographic subgroup on applicant perceptions was found, but significant interaction effects showed that certain subgroups might have more pronounced preferences for certain SJT design features. Specifically, ethnic minority applicants - but not ethnic majority applicants - showed greater preference for should-do than would-do instructions. Additionally, first-generation university students - but not non-first-generation university students - were more favourable of rating formats than of pick-one formats. CONCLUSIONS: Findings indicate that changing SJT design features may positively affect applicant perceptions by promoting procedural justice factors and reducing perceived ease of cheating and that response instructions and response format can increase the attractiveness of SJTs for minority applicants

Elastic Scattering by Deterministic and Random Fractals: Self-Affinity of the Diffraction Spectrum

The diffraction spectrum of coherent waves scattered from fractal supports is calculated exactly. The fractals considered are of the class generated iteratively by successive dilations and translations, and include generalizations of the Cantor set and Sierpinski carpet as special cases. Also randomized versions of these fractals are treated. The general result is that the diffraction intensities obey a strict recursion relation, and become self-affine in the limit of large iteration number, with a self-affinity exponent related directly to the fractal dimension of the scattering object. Applications include neutron scattering, x-rays, optical diffraction, magnetic resonance imaging, electron diffraction, and He scattering, which all display the same universal scaling.Comment: 20 pages, 11 figures. Phys. Rev. E, in press. More info available at http://www.fh.huji.ac.il/~dani