A ventriloquist is able to convince you that words are coming from his dummy’s mouth because the dummy’s mouth movements match the timing of the words actually coming from the ventriloquist. The ventriloquist is making use of the perceptual principle of

principle of contiguity

Explanation:

The Law of Contiguity states that after events occur together (in spatio-temporal proximity), the re-occurrence of just one of the event awakens the 'memory' of the others. It is employed in a great number of scientific theories of learning, memory, and knowledge.

connectedness in handwriting analysis is a useful tool in establishing the writer’s method of thinking and its perception in where he/she fits in to the environment around him in the social sense. in addition, the more connected the writing of an individual, the more he/she is flexible and single minded.