Object permanence is the understanding that developmental stages occur in a predictable sequence. biological growth processes enable orderly development. things continue to exist even when they are not perceived. the mass and volume of objects remain the same despite changes in their form.

things continue to exist even when they are not perceived.

Explanation:

Object permanence has to do with the realization that the existence of objects persists even though they cannot be seen, heard or touched. Swiss psychologist Jean Piaget used to believe that object permanence had to do with the babies' motor system development. However, he then suggests that children establish object permanence perception through the sense of tact and manipulation of objects.

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.