Jodi Arias told a Mesa courtroom Travis Alexander attacked her and answered, "Yes," when defense attorney Kirk Nurmi asked her if she had killed Alexander.
"The simple answer is that he attacked me and I defended myself," Arias said.
She also told the court she had planned to kill herself shortly after a September 2008 interview, three months after the killing, in which she said no jury "would ever convict me," ABC reported.
Arias also testified she had been beaten frequently as a child and that Alexander was controlling and abusive.
Celebrity Families of 2014 [PHOTOS]