What is the rationale for using standardized, norm-referenced instruments to assess speech-language functioning?

• A. They enable the clinician to generate weekly statements about a client's treatment progress.
• B. They provide the information necessary to generate a specific and comprehensive treatment plan.
• C. They enable the clinician to understand and make informed statements about how a client's performance compares with the performance of other people.
• D. They provide reliable information about how well a client is likely to respond to treatment.

Answer: (C)

The main idea here is that standardized, norm-referenced tools provide a benchmark by which a client’s speech-language performance can be compared to a representative group. By converting raw scores into standard scores or percentiles, you can see where the individual stands relative to peers of the same age and background. This helps you describe, with a common frame of reference, whether a client’s abilities are typical, delayed, or impaired, and where the strongest and weakest areas lie. That comparative perspective is essential for making judgments about diagnosis, eligibility for services, and communicating findings to families and other professionals. These instruments aren’t primarily about tracking weekly progress, exactly planning every treatment step, or predicting how someone will respond to therapy; they measure current standing against a normative sample.