Kourtney and Kelly say they want Dr. Phil to help them convince their mother, Karla, that she’s not Mrs. Tyler Perry, but rather the victim of an online scammer who they claim has already cashed in on $100,000 of Karla’s retirement fund.

TTELL DR. PHIL YOUR STORY: Explosive family drama?

In the conclusion of this two-part episode, Karla finds out some shocking information about her online love who she’s never met in real life, but does she admit she’s been conned?

In the video above, Dr. Phil explains confirmation bias, and why people often “dig in” to established beliefs when confronted with contradictory facts or opposing ideas.

Check here to find out where you can watch  Thursday's  Dr. Phil.

TELL DR. PHIL YOUR STORY: Know someone with outrageous behavior?

Woman Claims Her Mom Was Conned By A Catfish And ‘Is Almost On Her Last Dime’