When a parent or a person of authority excessively critizises a child like "you never get your homework on time" even if this was a false accusation the child will internalize those remarks and begin to act upon them and as a direct result to the remarks never getting their homework on time.
Is there a word in psychology to describe this phenomenon?
One adjective given in Lexico (Oxford Dictionaries) is
self-fulfilling
ADJECTIVEbound to be proved correct or to come true as a result of behaviour caused by its being expressed.
Children often know what is expected of them, and believing that children will behave poorly can lead to a self-fulfilling prophecy.
The Cambridge Dictionary has the phrase
self-fulfilling prophecy
nounsomething that you cause to happen by saying and expecting that it will happen
