State Diagram
A state diagram is intraclass (intraobject or intraagent) and it describes the states one object in the model can be in and the transitions which cause that object to change state.
A state diagram provides the component view of an object. To understand how the states of one object interact with the states of another object, a different approach has to be used.
Sources:Mohammad N. Alanazi, Jason A. Belt “Uml Analysis Using State Diagrams”, - 2006 – 6