They found that «critical slowing down» is a reliable early warning signal of a society on the edge of going bust. (businessinsider.com)
These assessments also act as early warning signals to educators to identify students who are struggling and get them back on track. (elearningindustry.com)
It was a good early warning signal that allowed the driver to take corrective action and avoid disaster. (articles.orlandosentinel.com)