Situational judgment tests: From measures of situational judgment to measures of general domain knowledge

Situational judgment tests (SJTs) are typically conceptualized as contextualized selection procedures that capture candidate responses to a set of relevant job situations as a basis for prediction. SJTs share their sample-based and contextualized approach with work samples and assessment center exercises, although they differ from these other simulations by presenting the situations in a low-fidelity (e.g., written) format. In addition, SJTs do not require candidates to respond through actual behavior because they capture candidates' situational judgment via a multiple-choice response format. Accordingly, SJTs have also been labeled low-fidelity simulations. This SJT paradigm has been very successful: In the last 2 decades, scientific interest in SJTs has grown, and they have made rapid inroads in practice as attractive, versatile, and valid selection procedures. Contrary to their popularity and the voluminous research on their criterion-related validity, however, there has been little attention to developing a theory of why SJTs work. Similarly, in SJT development, often little emphasis is placed on measuring clear and explicit constructs. Therefore, Landy (2007) referred to SJTs as psychometric alchemy (p. 418)

Development of practical high temperature superconducting wire for electric power application

The technology of high temperature superconductivity has gone from beyond mere scientific curiousity into the manufacturing environment. Single lengths of multifilamentary wire are now produced that are over 200 meters long and that carry over 13 amperes at 77 K. Short-sample critical current densities approach 5 x 104 A/sq cm at 77 K. Conductor requirements such as high critical current density in a magnetic field, strain-tolerant sheathing materials, and other engineering properties are addressed. A new process for fabricating round BSCCO-2212 wire has produced wires with critical current densities as high as 165,000 A/sq cm at 4.2 K and 53,000 A/sq cm at 40 K. This process eliminates the costly, multiple pressing and rolling steps that are commonly used to develop texture in the wires. New multifilamentary wires with strengthened sheathing materials have shown improved yield strengths up to a factor of five better than those made with pure silver. Many electric power devices require the wire to be formed into coils for production of strong magnetic fields. Requirements for coils and magnets for electric power applications are described

Unpacking the dark variance of differential attainment on examinations in overseas graduates

CONTEXT: Differential performance in postgraduate examinations between home medical graduates and those who qualified outside their country of practice is well recognised. This difference is especially marked in the practical component of the UK Membership of the Royal College of General Practitioners (MRCGP) examination. The potential causes of such disparities are not well understood. METHODS: Data were available for 1874 international medical graduates who applied for general practice (GP) specialty training in the UK in 2008-2012. The primary outcome was performance in the Clinical Skills Assessment (CSA) OSCE component of the MRCGP. The main predictors were performance on a situational judgement test (SJT) and clinical problem-solving test (CPST), a test of applied clinical knowledge, used in the selection for GP training. Data relating to demographic characteristics and English language fluency were also available. To better understand the relationship between the predictors, the selection measures and the outcome, a series of univariable and multivariable models were developed and tested, concluding with a structural equation model to explore causality. RESULTS: The CSA rating was more strongly predicted by SJT scores (standardised beta, 0.26) than by performance on the CPST (standardised beta, 0.17). There was a relationship between English language fluency and CSA score that was mainly mediated via SJT performance. CONCLUSIONS: These findings demonstrate that performance on an SJT predicts performance in a high-fidelity clinical simulation (the CSA) in international medical graduates. Although the constructs tested by SJTs are debated, and are likely to vary across settings, culturally appropriate knowledge of interpersonal competence is likely to be evaluated. Improving the confidence of doctors in this area through targeted educational interventions, rather than focusing on increased clinical knowledge, is likely to be more effective at reducing disparities observed in postgraduate examination performance. Thus, there are important implications for the design of specialty selection and licensing assessments globally

Prosocial implicit trait policies underlie performance on different situational judgment tests with interpersonal content

This study tests the hypothesis that situational judgment tests (SJTs) with interpersonal content reflect implicit beliefs about the utility of prosocial action for job effectiveness and that agreeable people are more likely to believe that prosocial action is effective. Two hundred ninety-four undergraduates completed four different SJTs with interpersonal content and a measure of Agreeableness. Results show that the effectiveness of response options in these SJTs is positively correlated with the level of prosociality they express and that because of their prosocial elements, scores on different SJTs are correlated with one another and with Agreeableness. These results shed light on the construct-related validity of SJTs with interpersonal content and point to the possibility that they can assess prosociality in job settings different from those described in their items

Progress in development of tapes and magnets made from Bi-2223 superconductors

Long lengths of (Bi,Pb)2Sr2Ca2Cu3O(x) tapes made by powder-in-tube processing have been wound into coils. Performance of the coils has been measured at temperatures of 4.2 to 77 K, and microstructures have been examined by x-ray diffraction and electron microscopy and then related to superconducting properties. A summary of recent results and an overview of future goals are presented

Prevention of domain swapping inhibits dimerization and amyloid fibril formation of cystatin C : use of engineered disulfide bridges, antibodies, and carboxymethylpapain to stabilize the monomeric form of cystatin C

Amyloidogenic proteins like cystatin C and prion proteins have been shown to form dimers by exchange of subdomains of the monomeric proteins. This process, called "three-dimensional domain swapping," has also been suggested to play a part in the generation of amyloid fibrils. One variant of cystatin C, L68Q cystatin C, is highly amyloidogenic, and persons carrying the corresponding gene suffer from massive cerebral amyloidosis leading to brain hemorrhage and death in early adult life. The present work describes the production of two variants of wild type and L68Q cystatin C with disulfide bridges at positions selected to inhibit domain swapping without affecting the biological function of the four cystatin C variants as cysteine protease inhibitors. The capacity of the four variant proteins to form dimers was tested and compared with that of wild type and L68Q cystatin C. In contrast to the latter two proteins, all four protein variants stabilized by disulfide bridges were resistant toward the formation of dimers. The capacity of the two stabilized variants of wild type cystatin C to form amyloid fibrils was investigated and found to be reduced by 80% compared with that of wild type cystatin C. In an effort to investigate whether exogenous agents could also suppress the formation of dimers of wild type and L68Q cystatin C, a monoclonal antibody or carboxymethylpapain, an inactivated form of a cysteine protease, was added to systems inducing dimerization of wild type and L68Q cystatin C. It was observed that catalytic amounts of both the monoclonal antibody and carboxymethylpapain could suppress dimerization

Relationships between emotional intelligence and sales performance in Kuwait

This study investigates the relationship between emotional intelligence (EI) and Total Sales Performance (TSP), and whether EI contributes to predicting the performance of sales professionals in Kuwait. The sample was 218 sales professionals working for 24 different car dealerships. An ability model of EI was measured using the Assessing Emotions Scale (AES) developed by Schutte et al. (1998) and its Arabic version. The trait model of EI was assessed using the Effective Intelligence Scale (EIS). The findings showed a negative but weak correlation between TSP and the AES and all its subscales. No correlation was found between TSP and the EIS. A weak positive correlation existed between Objective Sales Performance and each of total EIS, Accuracy, and Patience subscales

Development of commercially viable high-{Tc} Bi-2223 superconductor tapes

Long lengths of flexible Ag-clad Bi-2223 Superconductors have been fabricated by the powder-in-tube technique using prereacted, poly-phase, Pb-doped Bi-Sr-Ca-Cu-O powders. At liquid helium (4.2 K) temperature, improved process conditions yielded transport critical current density (J{sub c}) values greater than 10{sup 5} A/cm{sup 2} at zero field; at liquid nitrogen (77K) temperature, the J{sub c} values of short tape samples exceeded 4 {times} 10{sup 4} A/cm{sub 2}. Rolled tapes are cut into lengths up to 2 - meters long and are used in parallel to fabricate small superconducting pancake coils by the ``wind-and-react`` technique. The cots are characterized at 77K and 4.2 K. The J{sub c} of the coils are up to 80% of the short, rolled sample result at 77 K. The coils exhibited these results even after being cooled and warmed several times between ambient, 77 K and 4.2 K, indicating their stability following thermal cycling