"Psychopathy is a general term for mental disturbances or mental disorders. However, psychopathy is also used specifically for certain mental disorders characterized by emotional instability, perversity of conduct, undue conceit, suspiciousness, lack of self-control, lack of social feeling, lack of truthfulness, lack of common sense, and lack of persistence. The psychopathic personality likes to surround himself with others who also lack common sense and who are also moving toward unreality."-- From Bible doctrine notes of RB Thieme III, on the grieving of the Holy Spirit, AKA Cosmic One.
You are free to use your definition, but I will stick to the Hare Psychopathy Checklist.