The Effect of CEO Tenure on the Relation between Firm Performance and Turnover

We analyze the effect of CEO tenure on the relation between firm performance and forced turnover. We find that the performance-forced turnover relation is conditional on CEO tenure. Our results suggest a constant negative relation between firm performance and forced turnover throughout an inside CEO’s tenure. Founders are entrenched early in their careers but held accountable for firm performance later in their careers. We find evidence that outside hires experience a probationary period, followed by a period of apparent entrenchment during their intermediate years that weakens later in their tenure

The Match between CEO and Firm

We investigate the role of job-match heterogeneity in the CEO labor market. We document a high percentage of CEO turnovers in the early years of tenure as illustrated by the hazard that increases until the fifth year of CEO tenure and then decreases. Evidence suggests that a good match is more likely if the new CEO performs better than the previous CEO. The best matches tend to occur when inside (outside) CEOs follow previous CEOs who quit (are dismissed). Evidence consistent with match theory in the CEO labor market suggests factors that influence the likelihood of observing a good match

An Analysis of Executive Compensation in Small Businesses

Using a broad-based sample of small businesses, we analyze the relation between accounting-based firm performance measures and executive compensation for S-corporations, and C-corporations. After controlling for the potential endogeneity associated with the choice of organizational form, we find a positive relation between executive pay and ROA in S-corporations and C-corporations. We also find a positive relation between executive pay and total asset turnover but the relation is stronger for S-corporations. We document a positive relation between executive salaries and more diffuse ownership, owner managers, and when the founder is the current owner. We find a negative relation between executive salaries and firms with greater than fifty percent family ownership

Neurobehavioral consequences of chronic intrauterine opioid exposure in infants and preschool children: a systematic review and meta-analysis

<b>Background</b><p></p> It is assumed within the accumulated literature that children born of pregnant opioid dependent mothers have impaired neurobehavioral function as a consequence of chronic intrauterine opioid use.<p></p> <b>Methods</b><p></p> Quantitative and systematic review of the literature on the consequences of chronic maternal opioid use during pregnancy on neurobehavioral function of children was conducted using the Meta-analysis of Observational Studies in Epidemiology (MOOSE) and the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. We searched Cinahl, EMBASE, PsychINFO and MEDLINE between the periods of January 1995 to January 2012.<p></p> <b>Results</b><p></p> There were only 5 studies out of the 200 identified that quantitatively reported on neurobehavioral function of children after maternal opioid use during pregnancy. All 5 were case control studies with the number of exposed subjects within the studies ranging from 33–143 and 45–85 for the controls. This meta-analysis showed no significant impairments, at a non-conservative significance level of p < 0.05, for cognitive, psychomotor or observed behavioural outcomes for chronic intra-uterine exposed infants and pre-school children compared to non-exposed infants and children. However, all domains suggested a trend to poor outcomes in infants/children of opioid using mothers. The magnitude of all possible effects was small according to Cohen’s benchmark criteria.<p></p> <b>Conclusions</b><p></p> Chronic intra-uterine opioid exposed infants and pre-school children experienced no significant impairment in neurobehavioral outcomes when compared to non-exposed peers, although in all domains there was a trend to poorer outcomes. The findings of this review are limited by the small number of studies analysed, the heterogenous populations and small numbers within the individual studies. Longitudinal studies are needed to determine if any neuropsychological impairments appear after the age of 5 years and to help investigate further the role of environmental risk factors on the effect of ‘core’ phenotypes

Training macrosystems scientists requires both interpersonal and technical skills

Macrosystems science strives to integrate patterns and processes that span regional to continental scales. The scope of such research often necessitates the involvement of large interdisciplinary and/or multi-institutional teams composed of scientists across a range of career stages, a diversity that requires researchers to hone both technical and interpersonal skills. We surveyed participants in macrosystems projects funded by the US National Science Foundation to assess the perceived importance of different skills needed in their research, as well as the types of training they received. Survey results revealed a mismatch between the skills participants perceive as important and the training they received, particularly for interpersonal and management skills. We highlight lessons learned from macrosystems training case studies, explore avenues for further improvement of undergraduate and graduate education, and discuss other training opportunities for macrosystems scientists. Given the trend toward interdisciplinary research beyond the macrosystems community, these insights are broadly applicable for scientists involved in diverse, collaborative projects.https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/fee.228

The state of the Martian climate

60°N was +2.0°C, relative to the 1981–2010 average value (Fig. 5.1). This marks a new high for the record. The average annual surface air temperature (SAT) anomaly for 2016 for land stations north of starting in 1900, and is a significant increase over the previous highest value of +1.2°C, which was observed in 2007, 2011, and 2015. Average global annual temperatures also showed record values in 2015 and 2016. Currently, the Arctic is warming at more than twice the rate of lower latitudes