The Heritability of Aptitude and Exceptional Talent Across Different Domains in Adolescents and Young Adults

The origin of individual differences in aptitude, defined as a domain-specific skill within the normal ability range, and talent, defined as a domain specific skill of exceptional quality, is under debate. The nature of the variation in aptitudes and exceptional talents across different domains was investigated in a population based twin sample. Self-report data from 1,685 twin pairs (12–24 years) were analyzed for Music, Arts, Writing, Language, Chess, Mathematics, Sports, Memory, and Knowledge. The influence of shared environment was small for both aptitude and talent. Additive and non-additive genetic effects explained the major part of the substantial familial clustering in the aptitude measures with heritability estimates ranging between .32 and .71. Heritability estimates for talents were higher and ranged between .50 and .92. In general, the genetic architecture for aptitude and talent was similar in men and women. Genetic factors contribute to a large extent to variation in aptitude and talent across different domains of intellectual, creative, and sports abilities. Edited by Robert Plomin.     

Determinants of early retirement intentions among Belgian nurses

Title. Determinants of early retirement intentions among Belgian nurses Aim. This paper is a report of a study to gain insight into older nurses’ retirement intentions and to establish factors determining early retirement intention in these individuals. Background. In many developed countries, the working population is ageing. This will lead to a structural labour shortage in the near future. In nursing, this is already taking place. To retain nurses in employment, information on the determinants of their early retirement intentions are imperative. Method. A cross-sectional study was carried out in 2005 in one Belgian hospital. Data were collected by questionnaire with 100 nurses aged 45 or older. The response rate was 69·9%. Findings. No fewer than 77% of the nurses wanted to stop working before the age of 65 years. The following individual, work-related, and organizational factors contributed to older nurses’ intention to retire early: perceived health, marital status, gender, opportunities for change and development, workload, and negative stereotyping of older employees. Conclusion. Our findings offer insight regarding the influencing factors of early retirement intentions in nurses. This information may be useful to human resource managers and may enable them to successfully prevent early retirement in nurses. More research on this topic is needed as this will enable the development, implementation and evaluation of well-founded measures for retaining older nurses in the workplace.     

Short-term outcome of patients with cardiac- and thrombo-embolic cerebral infarcts

OBJECTIVES: It has already been demonstrated by previous studies that patients suffering from a cardiac-embolic stroke (CES) have a worse outcome than those with a thrombo-embolic stroke (TES). Many factors, such as age, initial stroke severity, stroke recurrence and vascular risk factors have been quoted as a possible explanation. The present retrospective study re-investigates more in detail which variables are the most important to explain the difference in disability between patients with CES and with TES on hospital discharge. PATIENTS AND METHODS: Seven hundred forty-two consecutive patients with a territorial infarct were admitted to the Stroke Unit of the Ghent University Hospital between October 2002 and June 2007. The groups of CES and TES consisted, respectively of 283 and of 459 patients. Age, gender, vascular risk factors including previous strokes and pacemaker implantation, initial stroke severity and outcome, determined by the mean modified Rankin (mR) scale on hospital discharge, were compared between both groups. RESULTS: Although the hospital stay of the patients with CES and TES was quite similar, the former group was much older with more females, more vascular risk factors, worse neurological deficit on admission and more disability on discharge. On logistic regression analysis coronary artery disease, isolated atrial fibrillation and cardiac valve disorder appear as independent predictors of stroke outcome. CONCLUSION: The worse outcome in the CES patients is mainly due to the cardiac status of the patients.     

Segmental testicular infarction: conservative management is feasible and safe

Segmental testicular infarction is a rare cause of acute scrotum. Its aetiology is not well defined and it can be clinically confused with a testicular tumour. Because the differential diagnosis between segmental testicular infarction and testicular tumour can be difficult, most authors in the past recommended surgery. Imaging plays an important role in the preoperative diagnosis, with a colour Doppler ultrasonography as the investigation of choice although magnetic resonance imaging (MRI) can be useful in doubtful cases. The objective of this retrospective study was to describe the radiologic findings and the outcome of conservative management in a single-centre experience of 19 cases of segmental testicular infarction.     

Histological assessment of pre‐transplant kidney biopsies is reproducible and representative

Snoeijs M G J, Boonstra L A, Buurman W A, Goldschmeding R, van Suylen R J, van Heurn L W E & Peutz‐Kootstra C J
(2010) Histopathology 56, 198–202 Histological assessment of pre‐transplant kidney biopsies is reproducible and representative Aims: Histological examination of pre‐transplant renal biopsy specimens can be used to select grafts from older donors after cardiac death (DCD) with a satisfactory transplant outcome. The aim was to determine whether such biopsy specimens can be reproducibly scored between pathologists and are representative of the whole kidney. Methods and results: In renal biopsy specimens from DCD aged ≥60 years (n = 44), globally sclerosed glomeruli, vascular narrowing, tubular atrophy and interstitial fibrosis were scored by three independent pathologists according to the Pirani scoring system. Interobserver agreement on the sum of scores improved considerably with the introduction of a combined tubulo‐interstitial scoring system (intraclass correlation coefficient increased from 0.38 to 0.64). In small needle biopsy specimens (n = 144) obtained at autopsy, estimates of the proportion of globally sclerosed glomeruli were more precise with increasing sample size. Reasonably precise estimates may be obtained from specimens with at least seven glomeruli. Conclusions: It is feasible to implement pre‐transplant renal biopsy specimen analysis as a selection criterion in clinical practice in order to accept kidneys from marginal donors for transplantation.     

Measuring risk perceptions of skin cancer: Reliability and validity of different operationalizations

Objective. Risk perceptions play a pivotal role in health behaviour theories. Accurate measurement is essential in order to investigate the explanatory value and effectiveness of interventions influencing these beliefs. This study investigated the reliability and predictive validity of different risk perception operationalizations related to skin cancer and sunscreen use in order to explain the inconsistent findings in literature regarding the relationship between risk perceptions and (cancer related) behaviours. Design and methods. Two on‐line surveys were conducted. Study 1 (N= 175) was conducted among university students to investigate the test–retest reliability of different operationalizations of perceived likelihood and perceived severity and to assess their correlations with sunscreen use. Study 2 (N= 418) was a prospective study among Dutch adults and assessed longitudinal correlations between the different operationalizations and sunscreen use. Results. Internal consistency (alpha) ranged between .13 and .90 for likelihood measures and between .37 and .88 for severity measures. Test–retest correlations (r/ICC) ranged between .51 and .82 for the likelihood measures and between .58 and .75 for the severity measures. Conditional likelihood estimates, particularly when phrased affectively (feeling at risk), and comparative severity questions were the strongest correlates of behaviour. Conclusion. Conditional likelihood and comparative severity might be better predictors of health behaviour than commonly used operationalizations of risk perception. These measures may be relevant for use in the development and evaluation of intervention programmes, and should be acknowledged by health behaviour theories. Suggestions for future research are discussed.