[header] How to spot a pro social psychopath [title] Watch for contradictions in speech. [step] A psychopath may end a conversation with a statement that opposes what they said at the beginning. Dishonesty and pathological lying is a sign of psychopathy. 
The person may talk about how disrespectful it is that your coworker always shows up late and does things they are not supposed to, and then moments later the person will break the rules without apology. [substeps] The contradictions may not occur within the same conversation, so keep track of what is said over time.