Maturation this the progressive development of human beings. Maturation can be mental, in terms of how we think and process information, or react to stimuli. We also physically mature.
As infants, we have no sense of object permanence, meaning that if we cannot see or touch an object, we assume it does not exist. From 7-12 months of age, we will look for a hidden object, but only in the first place it was hidden. From 12-18 months, we will look for the object in the last place it was hidden.
Critical periods are times in which learning specific skills are easiest in our development. For example, their are specific windows in which language and communication are taught the easiest.
When a child sees or experiences something, it will file or categorize that experience based on prior knowledge or experiences, into mental files called schemas. We may interpret information incorrectly, but still associate that stimulus with something else.
Accommodation occurs when a child or learner realizes that their assumption about a certain stimulus is incorrect and they must recategorize the information they pick up to fit the true nature of the stimulus.