no
No, polygraph tests are not admissible in court. Court precedents have decided that the polygraph test is unreliable, and that the test could dishonestly persuade the jury's verdict. The polygraph test is only used for investigative, law enforcement needs.
In most states, no. However, in some states they are allowed under certain circumstances. It's typically not within the trial judge's discretion when to and not to admit this evidence. Most states' appellate/supreme courts have set out rules in case law for when polygraph is admissible. For example, in several states, a polygraph is admissible in a criminal case when it is first introduced by the defendant, but the state may not be the first to introduce it. However, if the defendant introduces a polygraph test, the state may rebut that evidence with a conflicting exam.
Polygraph results are generally not admissible in court-martial proceedings. The military courts typically follow similar standards to civilian courts regarding the reliability and validity of polygraph tests. While they may be used in investigations or as part of a plea deal, their results cannot be relied upon as definitive evidence in court.
Legally, polygraphs are generally not admissible in criminal trials, and are therefore rarely, if ever, used. In general, polygraphs are not considered reliable enough to be scientific evidence. However, people will often volunteer to take a polygraph as part of a criminal investigation. Oftentimes, private companies and government agencies require polygraph examinations as part of the hiring and continuing employment process. In this case, a polygraph would be necessary to get/retain the job.
Yes and no. If your lying about a murder you can but if your lying about what color socks your whereing you cant.
Polygraph tests are generally not admissible as evidence in New York courts. The state considers them unreliable and lacks sufficient scientific validation for their results to be deemed credible in legal proceedings. However, they may be used in certain circumstances, such as for investigative purposes or in plea negotiations, but their results cannot be presented as evidence during a trial.
Your mode of dress is not admissible in court. The evidence cries to be admissible, your honor!
Polygraph examiner
Yes and no. What polygraph machines do is monitor specific biological functions such as pulse and skin temperature. The polygraph operator asks a series of test questions with known answers to esatblish a baseline for the subject. When humans lie there are a few typical responses, such as an elevated pulse. The polygraph operator decides whether or not the subject has responded honestly or not based on the changes in the measured functions.
The polygraph test is not "proof-positive". The polygraph test is not completely unreliable.
If something is admissible, that means it is acceptable.