Gender Differences in Performance Predictions: Evidence from the Cognitive Reflection Test

Sex Differences in Cognitive Reflection: A Meta-Analysis

The current study presents a meta-analytic review of the differences between men and women in cognitive reflection (CR). The study also explores whether the type of CR test (i.e., numerical tests and verbal tests) moderates the relationship between CR and sex. The results showed that men score higher than women on CR, although the magnitude of these differences was small. We also found out that the type of CR test moderates the sex differences in CR, especially in the numerical tests. In addition, the results showed that the length of numerical tests (i.e., number of items) does not affect the differences between men and women in CR. Finally, the implications of these results are discussed, and future research is suggested.

Level of Overestimation Among Dutch Recreational Skiers: Unskilled Tourists in the Mountains

OBJECTIVE

To examine the level of overestimation (LO), associated factors, and identify the group of severe overestimators, among recreational skiers.

DESIGN

Cross-sectional observational study.

SETTING

An intermediate difficulty slope in an artificial snow indoor ski hall, and one in the mountains (Flachau, Austria).

PARTICIPANTS

Dutch recreational skiers.

INDEPENDENT VARIABLES

Participants were asked to rate themselves (SRSS, self-reported skill score). While skiing downhill they were objectively evaluated by 2 expert assessors (OSS, observed skill score). Potential associated factors and predictors for severe overestimation were assessed by a questionnaire.

MAIN OUTCOME MEASURES

The LO, calculated by subtracting the OSS from the SRSS, was categorized into "no," "mild," and "severe." Potential differences between these groups were analyzed, and regression analyses were performed to identify the factors associated with severe overestimation. To construct a profile of severe overestimators, the dataset was stratified based on 3 variables.

RESULTS

Overestimation was largely present (79.8%), and was severe in 32%. The LO decreased toward the more skilled skiers. Severe overestimators were mainly male, skied the least hours per day, were more avoidant, and showed the highest proportions of beginners and slightly advanced skiers. The profile of "severe overestimator" is characterized by physically unprepared males, avoidant for certain weather circumstances.

CONCLUSIONS

Overestimation among recreational Dutch skiers is largely present, particularly among physically unprepared males, avoidant of certain snow and weather conditions. These features may function as a proxy to identify "severe overestimators" in comparable populations. Preventive strategies should focus to increase awareness particularly among these subjects.

Know thyself: Executive functioning and sex predict self-appraisal of functional abilities in community-dwelling older adults

Objective: The capacity for accurate self-appraisals of age-related changes in cognitive and functional abilities is integral to the maintenance of independence in later life, yet there is little understanding of the factors that place nondemented older adults at risk for poor self-awareness. This study examined the potential contributions of executive functioning (EF), crystallized intelligence (IQ-Cr), and sex in predicting congruence between performance and self-appraisals of instrumental activities of daily living (IADL) in a group of community-dwelling older adults. Method: A group of 150 nondemented, community-dwelling older adults (White and majority highly educated) completed measures of EF and IQ-Cr. Participants also completed five timed IADL tasks and self-appraised their performance relative to others of similar age. Results: Sex [F(1,148)  =  7.75, p = .006, ηp2 = .05] and EF [(F(1,147) = 5.30, p = .02, ηp2 = .04)], but not IQ-Cr, predicted the relationship between performance and self-appraisals, such that those with lower EF and those of male sex overestimated their performance more than those with higher EF and females. Conclusions: Findings indicate that having average to below average EF abilities and being of male sex are risk factors for less accurate self-report of IADL abilities and as such might represent important considerations when assessing IADL abilities via self-report among largely independent, community-dwelling older adults.

Mindfulness-based stress reduction is linked with an improved Cognitive Reflection Test score

Initially, dual-process theories suggested that the existence of two different cognitive systems explained why many participants do not find the correct answer in many reasoning tasks. The Cognitive Reflection Test (CRT) is one such task. It contains three questions with incorrect answers (typically associated with intuition and thus system 1 which processes information automatically) and correct answers (typically associated with deliberate thinking and thus system 2 which involves the conscious processing of information). More recent theories suggest system 1 is responsible for both incorrect and correct responses, with system 2 being used to resolve the conflict between these different intuitions. Since mindfulness training improves self-regulation and cognitive flexibility, we believe it could improve CRT scores by reducing the relative weight of initial intuitions by strengthening alternative intuitions, thus increasing the probability of triggering deliberate reasoning. To test this hypothesis, we recruited 36 participants, all registered in the same Mindfulness-Based Stress Reduction (MBSR) training. Of those 36 participants, 18 answered the CRT before the training and 18 answered it after 8 weeks of training. Results show that participants who followed MBSR training had better CRT scores than those without training. This is coherent with our hypothesis that mindfulness training could reduce the relative weight of initial intuitions and facilitate deliberate thinking.

Responses in cognitive hierarchy games are correlated with academic performance and the cognitive reflection test

Economics and Finance undergraduate students from four cohorts played LUPI, a game rewarding the person submitting the lowest unique positive integer, for a small bonus in an exam. Some months later, they played this game again with financial incentives and took a cognitive reflection test (CRT). We find that submitted responses to different configurations of LUPI are correlated with short-term (i.e., exam grade) and medium-term (i.e., final grade and GPA) academic performance, as well as the score in the CRT.

Ghana health service performance appraisal system: a cross-sectional study on practices and perceptions among employees in the Bono East Region of Ghana, West Africa

Introduction

the fulcrum of every organization lies in the productivity of its employees. Consequently, organizations have adopted a policy of fostering an organizational culture that promotes employee development, resulting in the consistent use of performance evaluation systems particularly, performance appraisals (PA). Nonetheless, the issue of concern for several organizations is whether PA will truly be an adequate tool for maximizing employee´s performance. Here is where it becomes important to gauge the perceptions and practices of Ghana Health Service (GHS) employees in the Bono East Region of Ghana, West Africa, towards these performance appraisal systems (PAS).

Methods

the study used an institutional-based cross-sectional study. Using simple random sampling, 375 health workers were recruited using a structured questionnaire. Data was analyzed using Stata. Bivariate and multivariate logistic regression analysis was performed and p-value less than 0.05 was considered statistical significance.

Results

the study revealed that the majority of the respondents (86.7%) had completed the performance appraisal form. Out of which 47.7% complete and submit PA every year, followed by those who complete and submit during promotion time (24.3%), every half year (15.1%) and anytime (12.9%). The key determinants of PA completion include; increasing age (AOR=2.24, 95% CI: 1.08-4.62), male staff (AOR=2.38, 95% CI: 1.16-4.91), permanent GHS employees (AOR=2.9, 95% CI: 1.07-7.86), respondents who had worked for 3 to 7 years (AOR=5.53, 95% CI: 2.48-12.36) and those with over 7 years working experience (AOR=20.80, 95% CI: 5.43-79.74).

Conclusion

the study identified that the majority of the respondents completed PA, but quite an encouraging number of them do not complete PA at the required period as expected. Age, male staff, permanent employment, and increasing years of experience were the significant predictors of PA completion. Continuous professional development for GHS staff on PAS is required. The GHS human resource division should organize stakeholders´ engagement with facilities managers and employees on the PAS to inform all managers and employees on what is required from everyone.

Occupational intervention in mental health hospitals: Study of contextual impact

BACKGROUND

Recovery-promoting and occupation-oriented interventions for people with schizophrenia who receive in-patient services are scarcely investigated, limiting our understanding of the factors affecting intervention effectiveness and hindering occupational inclusion.

AIMS

To investigate the impact of contextual factors on the effectiveness of 'Occupational Connections' (OC) - occupational intervention for in-patient psychiatric settings.

MATERIALS AND METHODS

Quasi-experimental, single-blind study compared between inpatients with schizophrenia participating in OC (N = 14) and those receiving treatment as usual only (N = 16) on primary outcomes of participation dimensions and recovery-orientation of the service, and on secondary outcomes of cognition, symptom severity, and functional capacity.

RESULTS

Participation in OC in a new context appears to contribute to improvement in cognitive fluency and flexibility, schizophrenia symptoms, and functional capacity (-2.8<t < 4.32, p < 0.05) with no improvement in the participation dimensions (-1.36<t < 1.36, p > 0.05) or reduction (-2.25<t < 3.74, p < 0.05). The pattern of change in primary and secondary outcomes in a new context was distinct from previous reports on OC effectiveness.

CONCLUSIONS AND SIGNIFICANCE

These findings suggest the impact of contextual factors on OC effectiveness. Personal participants' factors, institutional features, clinician characteristics, and intervention qualities should be considered in the process of the OC further development, evidence building, and clinical implementation to ensure optimal intervention results.

Does gender structure social networks across domains of cooperation? An exploration of gendered networks among matrilineal and patrilineal Mosuo

Cooperative networks are essential features of human society. Evolutionary theory hypothesizes that networks are used differently by men and women, yet the bulk of evidence supporting this hypothesis is based on studies conducted in a limited range of contexts and on few domains of cooperation. In this paper, we compare individual-level cooperative networks from two communities in Southwest China that differ systematically in kinship norms and institutions-one matrilineal and one patrilineal-while sharing an ethnic identity. Specifically, we investigate whether network structures differ based on prevailing kinship norms and type of gendered cooperative activity, one woman-centred (preparation of community meals) and one man-centred (farm equipment lending). Our descriptive results show a mixture of 'feminine' and 'masculine' features in all four networks. The matrilineal meals network stands out in terms of high degree skew. Exponential random graph models reveal a stronger role for geographical proximity in patriliny and a limited role of affinal relatedness across all networks. Our results point to the need to consider domains of cooperative activity alongside gender and cultural context to fully understand variation in how women and men leverage social relationships toward different ends. This article is part of the theme issue 'Cooperation among women: evolutionary and cross-cultural perspectives'.

Rates of perceived medical errors and its correlation with work-related factors and personal distress among emergency physicians in China: a national cross-sectional study

Purpose

Medical errors are a global concern, and specifically, EDs are at considerable risk for medical errors. Few studies focus on the healthcare provider’s self-perceived medical errors in hospitals, let alone the ED. Hence, this study explored perceived medical errors and their correlation with work-related factors and personal distress among physicians in EDs in China.

Methods

From July 2018 to August 2018, a national web-based cross-sectional study was conducted. The link to the web-based questionnaire was posted on the emergency physicians’ working platform, inviting Chinese licensed emergency physicians to participate anonymously in this survey. Our outcome of interest, medical errors, was investigated using self-reporting methods. Occupational stress was assessed using the Chinese version of the Effort-Reward Imbalance scale. The Patient Health Questionnaire, the subscale of the 10-item Positive and Negative Affect Schedule, the subscale of the validated Leiden Quality of Work Questionnaire and the 10-item Generalised Self-efficacy Scale were used to assess personal distress. Logistic regression analysis was used to determine factors significantly associated with perceived medical errors.

Results

A sample of 10 457 emergency physicians completed the survey. Almost half (43.63%) of physicians reported self-perceived medical errors during the previous 3 months. The rate of workplace verbal aggression, effort-reward imbalance and depressive symptoms were 81.81%, 78.39% and 35.71%, respectively. Medical errors were more likely to be reported among chief physicians, and those who reported the department was short-staffed for physicians, and who experienced workplace verbal aggression and intense work stress. Medical errors were significantly associated with negative affect and lower self-efficacy.

Conclusion

Self-perceived medical errors are prevalent among physicians working in EDs and are associated with their workplace environment and personal distress. Targeted interventions are required to reduce physicians’ workload and improve their working environment. Accounting for healthcare providers’ distress is imperative for reducing the incidence of medical errors and improving their health.

Becoming ‘Homo Economicus’ as Learned Behavior among Numerate Greek University Students

In this study, we use experimental methods to probe how far individuals depart from choices consistent with “Rational Economic Man” and whether these departures are associated with financial and numeric literature on the one hand, and, more fundamentally, with impulsive or analytical thinking—i.e., with cognitive reflection. We examine a purposely biased sample of Greek undergraduates enrolled in a course heavy on statistics and probability who participated in a battery of tests. Specifically, we use the Cognitive Reflection Test (CRT) jointly with numeric and financial literacy tools to understand how “irrational choices” result. Despite the expected bias, responders with lower CRT are more likely to be susceptible to behavioral biases, even when controlling for numeracy and financial literacy. In agreement with other studies, gender is associated with significance differences, which operate both independently and through the mediation of CRT.

Lower Levels of Directed Exploration and Reflective Thinking Are Associated With Greater Anxiety and Depression

Anxiety and depression are often associated with strong beliefs that entering specific situations will lead to aversive outcomes - even when these situations are objectively safe and avoiding them reduces well-being. A possible mechanism underlying this maladaptive avoidance behavior is a failure to reflect on: (1) appropriate levels of uncertainty about the situation, and (2) how this uncertainty could be reduced by seeking further information (i.e., exploration). To test this hypothesis, we asked a community sample of 416 individuals to complete measures of reflective cognition, exploration, and symptoms of anxiety and depression. Consistent with our hypotheses, we found significant associations between each of these measures in expected directions (i.e., positive relationships between reflective cognition and strategic information-seeking behavior or "directed exploration", and negative relationships between these measures and anxiety/depression symptoms). Further analyses suggested that the relationship between directed exploration and depression/anxiety was due in part to an ambiguity aversion promoting exploration in conditions where information-seeking was not beneficial (as opposed to only being due to under-exploration when more information would aid future choices). In contrast, reflectiveness was associated with greater exploration in appropriate settings and separately accounted for differences in reaction times, decision noise, and choice accuracy in expected directions. These results shed light on the mechanisms underlying information-seeking behavior and how they may contribute to symptoms of emotional disorders. They also highlight the potential clinical relevance of individual differences in reflectiveness and exploration and should motivate future research on their possible contributions to vulnerability and/or maintenance of affective disorders.

Assessing the Effect of Drivers’ Gender on Their Intention to Use Fully Automated Vehicles

Although fully automated vehicles (SAE level 5) are expected to acquire a major relevance for transportation dynamics by the next few years, the number of studies addressing their perceived benefits from the perspective of human factors remains substantially limited. This study aimed, firstly, to assess the relationships among drivers’ demographic factors, their assessment of five key features of automated vehicles (i.e., increased connectivity, reduced driving demands, fuel and trip-related efficiency, and safety improvements), and their intention to use them, and secondly, to test the predictive role of the feature’ valuations over usage intention, focusing on gender as a key differentiating factor. For this cross-sectional research, the data gathered from a sample of 856 licensed drivers (49.4% females, 50.6% males; M = 40.05 years), responding to an electronic survey, was analyzed. Demographic, driving-related data, and attitudinal factors were comparatively analyzed through robust tests and a bias-corrected Multi-Group Structural Equation Modeling (MGSEM) approach. Findings from this work suggest that drivers’ assessment of these AV features keep a significant set of multivariate relationships to their usage intention in the future. Additionally, and even though there are some few structural similarities, drivers’ intention to use an AV can be differentially explained according to their gender. So far, this research constitutes a first approximation to the intention of using AVs from a MGSEM gender-based approach, being these results of potential interest for researchers and practitioners from different fields, including automotive design, transport planning and road safety.

Physician factors associated with medical errors in Norwegian primary care emergency services

OBJECTIVE

The aim of this study was to examine the associations between characteristics of physicians working in primary care emergency units (PCEUs) and the outcome of assessments of the medical records.

DESIGN

Data from a previous case-control study was used to evaluate factors related to medical errors.

SETTING

Ten Norwegian PCEUs were included.

SUBJECTS

Physicians that had evoked a patient complaint, and a random sample of three physicians from the same PCEU and time period as the physician who had evoked a complaint. Recorded physician characteristics were: gender, seniority, citizenship at, and years after authorization as a physician, specialty in general practice, and workload at the PCEU. Main outcome measures: Assessments of the medical records: errors that may have led to harm, no medical error, or inconclusive.

RESULTS

In the complaint group 77 physicians were included, and in the random sample group 217. In the first group, 53.2% of the medical records were assessed as revealing medical errors. In the random sample group, this percentage was 3.2. In the complaint group the percentages for no-error and inconclusive for the female physicians were 30.8 and 15.4; and for the male physicians 9.8 and 27.3, p = 0.027.

CONCLUSION

In the group of complaints there was a higher percentage with no assessed medical error, and a lower percentage with inconclusive assessments of medical errors, among female physicians compared to their male colleagues. We found no other physician factors that were associated with assessed medical errors. Future research should focus on the underlying elements of these findings.Key pointsMedical errors are among the leading causes of death and they are essentially avoidable. Primary care emergency units are a vulnerable arena for committing medical errors.By assessing the medical records of a group of physicians who had evoked a complaint, no differences related to physician factors were revealed in the incidence of medical errors.In the group of female physicians, the proportion of no-errors, was higher, and the percentage of inconclusive medical records was lower than for their male colleagues.The Norwegian regulations on independent participation in PCEUs may have modulated these results.

Gender inequality and national gender gaps in overconfidence

Using a large dataset of marathon runners, we estimate country- and gender-specific proxies for overconfidence. Subsequently, we correlate them with a number of indices, including various measures of gender equality. We find that in less gender-equal countries both males and females tend to be more self-confident than in more equal countries. While a substantial gender gap in overconfidence is observed, it only correlates with some sub-indices of gender equality. We conclude that there is likely a weak relationship between OC gender gap and gender inequality.

Physiological Changes, Activity, and Stress During a 100-km-24-h Walking-March

Background

Long-endurance exercises like ultramarathons are known to elicit various metabolic and physiological changes in the human body. However, little is known about very long-duration exercise at low intensities regarding healthy human subjects.

Aim

The purpose of this study was to evaluate changes in body composition and metabolism in long-endurance but low-intensity events.

Methods

Twenty-five male and 18 female healthy recreational athletes (age 34.6 ± 8.8 years; BMI: 22.4 ± 2.0 kg/m²) of the "100 km Mammutmarsch" were recruited for participation during the events in 2014-2016. Other than classical ultramarathons, the "Mammutmarsch" is a hiking event, in which participants were required to walk but not run or jog. It was expected to complete the 100-km distance within 24 h, resulting in a calculated mean speed of 4.17 km/h, which fits to the mean speed observed (4.12 ± 0.76 km/h). As not all participants reached the finish line, comparison of finishers (FIN, n = 11) and non-finishers (NON, n = 21) allowed differential assessment of performance. Body composition measured through bioelectrical impedance analysis (BIA) was determined pre- and post-event, and serum samples were taken pre-event, at 30, 70, and 100 km to determine NT-pro-BNP, troponin T, C-reactive protein (CRP), cortisol, low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglycerides, total cholesterol, total creatine kinase (CK), CK-MB, aminotransferase (AST), ALT, and sodium levels. Nineteen participants wore actimeter armbands (SenseWear^®) to gain information about body activity and exercise intensity [metabolic equivalent of task (MET)]. Sixteen participants wore mobile heart rate monitors to assess mean heart rate during the race. Serum parameter alterations over the course of the race were analyzed with mixed-effects ANOVA and additional t-tests. All serum parameters were analyzed for correlation concerning different MET levels, speed, age, BMI, baseline NT-pro-BNP, mean heart rate during the race, and sex with linear regression analysis.

Results

We found significant elevations for muscle and cardiac stress markers (CRP, CK, CK-MB, AST, ALT, cortisol, and NT-pro-BNP) as well as decreasing markers of lipid metabolism (cholesterol, triglycerides, LDL). Although the intensity level demanded from our participants was low compared with other studies on (ultra-) marathons, the alteration of tested parameters was similar to those of high-intensity exercise, e.g., NT-pro-BNP showed a fourfold increase (p < 0.01) and LDL decreased by 20% (p = 0.05). Besides the duration of exercise, age, BMI, training status, and sex are relevant parameters that influence the elevation of stress factors. Notably, our data indicate that NT-pro-BNP might be a marker for cardiovascular fitness also in healthy adults.

Conclusion

This low-intensity long-endurance walk evoked a strong systemic reaction and large cell stress and shifted to a favorable lipid profile, comparable to higher intensity events. Despite increasing cardiac stress parameters, there were no indications of cardiac cell damage. Remarkably, the duration seems to have a greater influence on stress markers and metabolism than intensity.

Physician factors associated with increased risk for complaints in primary care emergency services: a case - control study

BACKGROUND

Patient safety incidents defined as any unintended or unexpected incident that could have or were judged to have led to patient harm, are reported as relatively common. In this study patient complaints have been used as an indicator to uncover the occurrence of patient safety incidents in primary care emergency units (PCEUs) in Norway.

METHODS

Ten PCEUs in major cities and rural parts of Norway participated. These units cover one third of the Norwegian population. A case-control design was applied. The case was the physician that evoked a complaint. The controls were three randomly chosen physicians from the same PCEU as the physician having evoked the complaint. The following variables regarding the physicians were chosen: gender, citizenship at, and years after authorization as physician, and specialty in general practice. The magnitude of patient contact was defined as the workload at the PCEU. The physicians' characteristics and workload were extracted from the medical records from the fourteen-day period prior to the consultation that elicited the complaint. The rest of the variables were then obtained from the Norwegian physician position register. Logistic regression was used to estimate odds ratio for complaints both unadjusted and adjusted for the independent variables. The data were analyzed using SPSS (Version25) and STATA.

RESULTS

A total of 78 cases and 217 controls were included during 18 months (September 1st 2015 till March 1st 2017). The risk of evoking a complaint was significantly higher for physicians without specialty in general practice, and lower for those with medium low and medium high workload compared to physicians with no duty during the fourteen-day period prior to the index consultation. The limited strength of the study did not make it possible to assess any correlation between workload and the other variables (physician's gender, seniority and citizenship at time of authorization).

CONCLUSIONS

Continuous medical training and achieving the specialty in general practice were decisively associated with a reduced risk for complaints in primary care emergency services. Future research should focus on elements promoting quality of care such as continuing education, duty rosters and other structural and organizational factors.

Hunger Bias or Gut Instinct? Responses to Judgments of Harm Depending on Visceral State Versus Intuitive Decision-Making

Empirical investigation into the emotional and physiological processes that shape moral decision-making is vast and growing. Yet, relatively less attention has been paid to measures of interoception in morality research despite its centrality in both emotional and physiological processes. Hunger and thirst represent two everyday interoceptive states, and hunger, in particular, has been shown to be influential for moral decision-making in numerous studies. It is possible that a tendency to focus on internal sensations interoceptive sensibility (IS), as well as the emotional and physiological states associated with visceral states, could be important in the relationships between hunger, thirst, and moral judgments. This cross-sectional online research (n = 154) explored whether IS, hunger, thirst, and emotional state influenced appropriateness and acceptability judgments of harm. The moral dilemma stimuli used allowed the independent calculation of (1) people's tendency to avoid harmful action at all costs and (2) people's tendency to maximize outcomes that benefit the greater good. The Cognitive Reflection Task (CRT) was implemented to determine whether an ability to override intuitive responses to counterintuitive problems predicted harm-based moral judgments, as found previously. Hunger bias, independent of IS and emotional state, was influential for non-profitable acceptability judgments of harmful actions. Contrary to dual-process perspectives, a novel finding was that more intuitive responses on the CRT predicted a reduced aversion to harmful actions that was indirectly associated with IS. We suggest that IS may indicate people's vulnerability to cognitive miserliness on the CRT task and reduced deliberation of moral dilemma stimuli. The framing of moral dilemmatic questions to encourage allocentric (acceptability questions) versus egocentric perspectives (appropriateness questions) could explain the divergence between hunger bias and intuitive decision-making for predicting these judgments, respectively. The findings are discussed in relation to dual-process accounts of harm-based moral judgments and evidence linking visceral experiences to harm aversion and moral decision-making.

Women as first authors in key pharmacy journals: Analysis by publication type

BACKGROUND

Numerous national and international studies have explored the issue of gender disparity in health science-publication rates. However, few have examined publication type (e.g., reviews and original research) and authorship order, which are 2 key factors in contribution recognition and the work's visibility and application.

OBJECTIVE

The objective of this work was to determine the changes in the distribution of women as first authors by publication type over time in pharmacy practice journals.

METHODS

This was a bibliometric data analysis of pharmacy practice publications from January 2007 through December 2017. We used data from the U.S. Social Security Administration, and the multilingual Genderize application program interface (Genderize.io) to identify the authors' potential gender. To determine the publication type, we used the Web of Science article list (Clarivate Analytics, Philadelphia, PA). The Cochran-Armitage trend test was used to determine the differences over time.

RESULTS

Articles published from January 2007 through December 2017 in 8 pharmacy practice journals were reviewed (N = 14,658 articles): research articles (63.8%), reviews (17.0%), editorial material (11.1%), and letters (8.1%). There was a statistically significant increase in the number of first-authored articles and reviews by women (45.1% to 55.4% and 39.2% to 56.1%, respectively). There was not a significant increase in the proportion of women as first authors in editorials or letters over the study period.

CONCLUSION

Despite increases in research and reviews with women as first authors, there is still a need for increased representation of women in opinion-based publications such as editorials.

Neural basis of romantic partners' decisions about participation in leisure activity

Leisure activity is one of key ingredients for individual happiness and life satisfaction. Enjoying leisure activity with one’s partner can increase marital satisfaction. This study aimed to identify the neural basis of making decisions on participation in a leisure activity with one’s romantic partner as well as the relationship between leisure activity and satisfaction with life. Thirty-seven soon-to-be married heterosexual couples were participated in functional MRI while deciding participation in specific leisure activities in the individual, partner, with-friend, and with-partner conditions. We constructed analysis of variance models and investigated couple characteristics such as personality similarity, leisure activity matching rate, and spatial similarity in the bilateral frontoparietal network. The results showed decreased activity in the bilateral hippocampus during the task in the with-partner condition. Individual leisure activity was correlated with quality of life in males, whereas participation in leisure activity might require more cognitive loading on the dorsolateral prefrontal cortex in females. The leisure activity matching rate was correlated with courtship period, personality similarity, and spatial similarity of the right frontoparietal network during the task. These findings suggest that although there are different activation pattern in making decisions on leisure activity between romantic couples, spatial similarity of the partner’s social brain networks may be a marker that predicts how well the couple enjoys leisure activity together. In addition, our couples’ data analysis provides a scientific basis for the saying that romantic couples become more similar the longer they are together.

Comparison of esthetic smile perceptions among male and female Indonesian dental students relating to the buccal corridors of a smile

Background: A smile constitutes a form of measurement as to whether or not an orthodontic treatment has proved successful. A smile is said to be ideal if a balance exists between the shape of the face and teeth. One benchmark used to assess the quality of an ideal smile is that of buccal corridors. These are formed of the black space between the lateral edge of maxillary posterior teeth and the corner of the lip which appears during the action of smiling. Evaluating the contrasting perceptions of male and female smiles based on buccal corridor aspects is considered important to identifying the specific qualities an ideal smile. Purpose: The purpose of this study was to determine the difference between the perceptions of an ideal smile held by Indonesian dental students of both genders based on buccal corridors. Methods: A total of 36 dental students, equally divided between male and female students and ranging in age from 18-21 years old, were enrolled in this study. The smiles of all subjects were photographed from the front for later assessment by the subjects themselves. Assessment was undertaken twice, with a two-week interval between the first and second, by comparing subjects’ photographs with reference pictures of buccal corridors. Data gathered were analyzed by using kappa-statistic and U-Mann Whitney. Results: The results indicated that all the subjects showed a good level of coincidence in their analysis (κ=0.76). Statistical analysis showed that the score of 0.123 (p>0.05) was shown in U-Mann Whitney. Conclusion: Indonesian male and female dental students have the same perception of an aesthetic smile with regard to its buccal corridor.