reinforcement

A military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission.

A device designed to provide additional strength.

“he used gummed reinforcements to hold the page in his notebook”

Information that makes more forcible or convincing.

“his gestures provided eloquent reinforcement for his complaints”

An act performed to strengthen approved behavior.

(psychology) a stimulus that strengthens or weakens the behavior that produced it.