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Narcissistic Personality Inventory (NPI)
The NPI (Raskin & Terry, 1988) consists of 40 items relating to psychometric properties of
narcissism behaviour and perceptions. The items are scored using a true or false format. Higher
scores indicate more narcissistic characteristics.
Procedure
Participants from the large cross-sectional study, who had given their consent to be contacted
about further research, were sent an email invitation to complete a survey online. This email
provided a link to the survey website, where an information sheet was viewed and informed
consent could be given. Only those participants who gave this consent were able to progress
through the main body of the survey. An online survey website was used to administer the
questionnaire. The online survey was hosted on a secure site, all data was encrypted when
downloaded, and participants each had a unique participant code.
Participants were presented with a series of six social situation vignettes (one at a time),
describing several different social situations where the character (i.e. the participant) was
subject to a form of anti-social behaviour. Participants are required to read each situation and
respond using two rating scales. The first scale required participants to report how much
punishment they would hypothetically administer to the perpetrator(s). The other scale required
participants to rate the extent to which this situation made them feel they had “had a raw deal
out of life”. For example:
You have finished most of what you set out to do, and are about to go home. As
you start heading off, you see a group of four or five men and women in their late
teens. They stare at you as you approach, and then as you pass, make insulting
comments about the way you look.
Two police officers get out of an unmarked car, they have witnessed the whole
thing. One of them moves the youths into a police van, and the other lets you know
that they are trying a new scheme of youth justice, where people on the receiving
end of anti-social behaviour can set an instant fine on those who the police catch in
the act.
What fine would you like to give each of the youths who commented on your looks?
Please choose from the following responses:
No fine £1 -12 £13-24 £25-36 £37-48 £49+
To what extent would this situation make you feel like you have had a raw deal out
of life?
Not at all Strongly agree Disagree Agree Strongly agree Definitely
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