A workplace study has shown the value of people management to the bottom line. It says firms that are highly skilled in core human resources practices experience up to 3.5 times the revenue growth of less capable companies. The report, From Capability to Profitability, was based on a survey of more than 4,200 HR and non-HR managers worldwide. The report found the correlation between economic performance and HR capability was especially strong in certain areas, including performance management and leadership development.