 Brad here, this video's word is artifact. Not talking about bones, that's a lack of responding. An artifact in behavioral terms is an outcome or result that appears to exist because of the way we measured it. An example would be poor little Tim, he raises his hand in class, maybe two or three times, but according to the teacher, he's constantly raising his hand to the point of disrupting everything. Another artifact is that Stephanie must be addicted to coffee because she's always drinking coffee on Thursday.