Precognition in Scots law is the practice of taking a factual statement from witnesses before a trial is enjoined. This is often undertaken by trainee lawyers or precognition officers employed by firms. Many of these are former policemen.
This procedure is followed in both civil and criminal causes. While the subsequent statement is itself inadmissible as evidence, it allows an advocate or solicitor in Scotland to appear before the courts of Scotland knowing what evidence each witness is likely to present.