What is a key limitation of relying solely on informal assessment?

• A. It provides standardized scores.
• B. It lacks structure and may be subjective.
• C. It may be less reliable and harder to generalize.
• D. It yields precise norm-referenced comparisons.

Answer: (C)

A key limitation of relying solely on informal assessment is that the results tend to be less reliable and harder to generalize. Informal methods—such as unstructured observations, casual interviews, or informal checklists—often lack standardized procedures. This means different evaluators may interpret behaviors differently, and the same person’s performance can vary across settings or days. That variability undermines reliability, the consistency of results across time and evaluators. It also makes it hard to apply findings beyond the specific moment or context, which is what generalizability is about. Because informal data can be influenced by mood, environment, or examiner bias, it provides a less stable basis for broad conclusions. Formal, standardized assessments are designed to address these issues with consistent procedures and norms, offering more dependable and generalizable information.