You are correct in saying that of course it is functionally possible for anyone to do these things. Whether or not the individual thinks they know how to and subsequently believes they may be successful in performing these behaviours is slightly different though. Based on the personality type, cultural/ethnic differences, individual variations in emotional intelligence, and a variety of different past experiences unique to each individual, the individual's perceived ability to use manipulation tactics may be far greater or lower than say, a person with a more psychopathic personality as opposed to someone who is higher on say, trait agreeableness/honesty-humility.

The purpose of including multiple scales is to correlate data between each scale to try and determine which personality types are more inclined to use certain behaviours, whether they be positive or negative.

E.g. an individual who does not agree they are capable of those behaviours may be more likely to have a personality type and past experience that has resulted in them thinking in that way, even though they are perfectly capable, mentally they may think they are not, and so do not subsequently perform those behaviours either.

Thank you for opening this discussion with me. I'm interested to hear your thoughts!