Wiktionary
n. (context usually derogatory English) A prediction that, by being voiced, causes itself to come true.
Wikipedia
A self-fulfilling prophecy is a prediction that directly or indirectly causes itself to become true, by the very terms of the prophecy itself, due to positive feedback between belief and behavior. Although examples of such prophecies can be found in literature as far back as ancient Greece and ancient India, it is 20th-century sociologist Robert K. Merton who is credited with coining the expression "self-fulfilling prophecy" and formalizing its structure and consequences. In his 1948 article Self-Fulfilling Prophecy, Merton defines it in the following terms: In other words, a positive or negative prophecy, strongly held belief, or delusion—declared as truth when it is actually false—may sufficiently influence people so that their reactions ultimately fulfill the once-false prophecy.
Self-fulfilling prophecy are effects in behavioral confirmation effect, in which behavior, influenced by expectations, causes those expectations to come true. It is complementary to the self-defeating prophecy.
Usage examples of "self-fulfilling prophecy".
But we can still be the voice of the self-fulfilling prophecy, the midwife if not the mother of a new age.
We have to inoculate the species against the contagion of madness that is plaguing humankind or this damn Carter hypothesis is going to become a self-fulfilling prophecy.
We have to inoculate the species against the contagion of madness that is plaguing humankindi or this damn Carter hypothesis is going to become a self-fulfilling prophecy.