Could robots be counselors? Early research shows positive user experience

If they try to measure patients' "feelings" instead of their objective activity, they may just wind up measuring how comfortable patients are with lying to robots.

 

And with much of this subjective-origin bias, it is not lying - patients can potentially state some untruths in the sincere belief they are speaking the truth. As well, of course, as the cases where they know they may be leaning on the truth.