Which model focuses on where the language problem lies in children?

The descriptive-developmental model is correct because it prioritizes understanding the specific nature and characteristics of a child's language difficulties. This model emphasizes assessing a child's language abilities in relation to normal developmental milestones and patterns. It allows for identification of where the language problem exists—whether it involves expressive language, receptive language, or both—by comparing the child’s performance to typical developmental trajectories.

This approach is holistic and considers not only what difficulties the child is experiencing but also how those difficulties manifest in terms of their overall development. By closely examining the specifics of a child’s language use within the broader context of their development, professionals can tailor interventions that are more effective and supportive of the child's needs.

In contrast, other models like the social-interaction model or the cognitive model may focus on different aspects such as how social contexts affect language use or the cognitive processes behind language acquisition, rather than specifically identifying the locus of the language problem itself. The behavioral model focuses on observable behaviors and reinforces specific language skills through practical applications, which does not directly address the underlying issues in language development.