Language problems may be due to other problems, including mental retardation, pervasive developmental disorder or autism, physical handicaps, hearing loss, environmental deprivations, neurological problems, or a combination of these factors.

A study in 2005 by Rivera et. al. decided to analyze how children of different ages listen and respond to questions of varying difficulty. The research examined three areas: 1) Whether there were differences between educators of toddlers and preschoolers in terms of the frequency and type of questions used. It was predicted that early childhood educators working with preschool-age children would ask more questions, more open-ended questions, and more topic-continuing questions than those working with toddlers. This hypothesis was based on the expectation that the more advanced linguistic and conversational abilities of preschoolers would motivate educators to use more of these question types. 2) Whether preschoolers responded more frequently to these different types of questions than toddlers. It was...
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