Answer:
Self-fulfilling prophecy
Step-by-step explanation:
Self-fulfilling prophecy is the term which is defined as the phenomenon of socio- psychological of expecting something or predicting and this prediction comes true as one believes it will and the consequences behaviors align for fulfilling those beliefs.
In short, it states that the people belief could influence their actions.
So, in this case, the concept which state the team poor performance is the self- fulfilling prophecy.