Child development is evaluated using a multidimensional approach that combines standardized testing, parental questionnaires, clinical interviews, and direct observations rather than relying on observations alone.
The claim asserts that observations are used as the sole basis to identify childhood development. Multiple retrieved papers explicitly describe comprehensive developmental assessments that combine parental questionnaires, standardized tests, interviews, and behavioral assessments alongside observations. Therefore, the claim is refuted by the literature demonstrating multi-method assessment protocols.