Answer: Take the online Narcissistic Personality Inventory test.
The NPI is a reliable, well validated test used in a lot of psychological research into narcissism.
It consists of 40 forced-choice questions and takes just a few minutes to complete. You receive a total score and 6 sub-scores for:
- authority
- self-sufficiency
- superiority
- exhibitionism
- vanity
- entitlement
I scored a bit below average overall, but was a tad high for authority and exhibitionism!
Apparently narcissism peaks around 24 and then declines–presumably we mature and grow a bit more wise and humble with age!
Here is a great article on How to Spot a Narcissist from the Psychology Today website.