Many people are interested in lie detector tests, and whether they are admissible in court. The short answer is that they are not admissible in court in South Africa. However, there are some private companies that use them for pre-employment screening.
There are a few reasons lie detector tests are not admissible in court. The first reason is that they are not 100% accurate. There is always a margin of error. The second reason is that they can be easily manipulated. If someone is nervous or anxious, they may show up as lying even if they are telling the truth.
Private companies may use lie detector tests as part of their pre-employment screening, but they should not be relied on solely. They should be used as one piece of evidence, along with other things like interviews and references.
