On March 15, 2013, an important Arizona court hearing regarding the Jodi Arias trial was canceled due to a personal matter that involved an attorney, according to HLN. The hearing was reportedly to take place so Judge Sherry Stephens could determine whether testimony from psychologist Richard Samuels about premeditated murder and crimes committed under the heat of passion would be allowed. Jodi Arias and Travis Alexander Nude Photos Shown to Jury According to HLN, Arias’ attorneys want the forensic specialist to talk about research that explains the differences between the two types of crimes. View slideshow: Graphic Crime Scene Photos in Jodi Arias Case On Thursday, psychologist Richard Samuels testified for the defense, saying Arias is basically a peace-loving woman who does not have clear memories of what happened on the day Alexander died because she is suffering from post traumatic stress disorder. The hearing is now slated to take place on Monday afternoon, reports HLN. Watch th