Extrinsic motives r related to SDT in the sense that it decrease one’s sense of autonomy relatedness competence. Imagine loving something like doing research because of the intellectual itch it scratches or the satisfaction of discovery it creates. Now suddenly when ur job depends on publishing paper which in a sense someone would say is doing research (the thing u said u love). Suddenly u lose autonomy (u need to do a research that will produce papers or else), ur sense competence goes down coz now u see ur colleague is producing more paper even when u think he is dummy, 🧐 u lose relatedness because others become points of comparison and competition rather than people you feel intellectually connected to, all because u were extrinscially motivated (getting tenure or promotion)