KI 0117 Author names comes with initials (or full first names) when using the APA style?
(updated )
The APA 6th style requires the citations to be unambiguous. It is therefore imperative that initials are added (or full first names if initials are not enough) to separate different authors from one another.
If you have multiple references by the same author, it is important that the author name is written exactly the same in all references so that EndNote knows that there are no different authors.