One might say psychological processes such as motives, intentions, sentiments, etc., are the core processes which manifest themselves in overt behavi… - Fritz Heider

[Unlike objects, people are] usually perceived as action centers and as such can do something to us. They can benefit or harm us intentionally, and we can benefit or harm them. Persons have abilities, wishes, and sentiments; they can act purposefully, and can perceive or watch us. They are systems having an awareness of their surroundings and their conduct refers to this environment, an environment that sometimes includes ourselves.

Personal causality, refers to instances in which p causes x intentionally. That is to say, the action is purposive.

In the basic case, where the person is concerned with the dispositional properties of his surrounding environment, the choice is between external attribution and internal (self) attribution.