I can vouch for the fact that women do it too.
My parents both were taken in by a complete sociopath. She told them she had a dead husband & children, that she had cancer, that she had millions in a trust (payout from 'the accident') and she would leave it to my parents if they would take care of her until she died from her 'cancer'.
Then she told them the FBI was protecting her from the mean nasty rich people in town (because she knew dodgy things about them), that they were watching our house, that the rich people were hiring people to kill her.....
My parents are intelligent people, both with master's degrees FFS. I was already living overseas, and they wouldn't talk to me about it because they thought their phones and computers were bugged! They were also told I, my brother, and other family members were 'in danger' and 'being watched'. It all sounds ridiculous when written out like that, but this woman was a complete master at manipulation. She seemed to have loads of money because she was stealing from my father's store.
There's more and more outrageous crap, and it broke up my parents' marriage when my mom finally decided she didn't believe it all, starting investigating and finding out some of the lies, and my dad just couldn't see it. My mom threw them both out of the house and divorced my dad, and had to have treatment for PTSD. Even now, she says she doesn't know what was real and what wasn't.
Dad finally realised all wasn't what it seemed, but only after marrying the crazy bitch so he could have health insurance (people are that desperate in the U.S.). I helped him start divorce proceedings and he is finally rid of her, though she's such a psycho she still calls him and tries to blackmail him, then randomly asks him out on 'dates'! She weaseled her way into his store and stole all the evidence of her theft while he was away caring for my brother who'd been in an accident, so he's lost loads of money. He blames himself for being greedy--but who would ever expect such lies and deceit from someone?
This sociopath went to counseling too. . .she needs to be locked up really! People like this do not change, they just find new victims. My parents were not the first, and the probably won't be the last. I can only hope she'll be hit by a bus or something so she won't hurt anyone else.