Time-out is a behavior management technique that involves removing a child from reinforcing environments or stimuli as a consequence for misbehavior. There are three main types: observational, exclusion, and seclusion. Research has found time-out can be effective if implemented properly, such as ensuring the child understands the rules and time-out is consistently applied. However, it also has disadvantages like not addressing the root causes of behaviors. Overall the document discusses how time-out should be used cautiously and as part of a comprehensive approach.