A naturally fluffy white beard, a round belly and a jolly laugh might seem like the keys to being a successful Santa Claus, but new research suggests that a calling to play the man with the bag full of toys is enough to help candidates overcome a lack of typical attributes for the role.

Managers’ narcissistic tendencies may fundamentally affect whether a company makes risky or safe moves as a response to the firm’s above-aspiration performance, according to a new study published in Strategic Management Journal. In a study that helps to clarify prior conflicting research, the researchers find evidence that high-narcissism CEOs respond to above-aspiration performance with more acquisitions, while low-narcissism CEOs avoid acquisitions.

A major new study by UCL researchers has revealed the challenges faced by London’s 1.3m night workers, including pay inequality, health problems, transport difficulties, safety concerns and a lack of workplace dignity.

The new study shows sharp increases in hospitalizations, bed days, and costs for children with complex chronic conditions. This care is increasingly concentrated in urban teaching children’s hospitals, raising significant challenges for staffing, training, and Medicaid reimbursement.