Which type of evidence is gathered from individuals using investigative techniques such as interviewing, interrogation, and honesty tests?

Answer: Testimonial Evidence

Explanation: Testimonial Evidence refers to an individual's account of an incident offered to prove the truth or veracity of a criminal or civil proceeding. Testimonial Evidence relies on the understanding of witnesses about what transpired at a crime scene. Hence, investigators use this to recreate series of events leading to the crime. The evidence must be relevant, material and competent before it can be used to prove or disprove a fact. Testimonial Evidence also needs no reinforcing evidence before admission by a court.