Which of the following is NOT a measurement method mentioned?

The correct answer is based on the classification of measurement methods used in research and practice. Standardized scales, individualized rating scales, and behavioral observation all fall under the category of direct measurement methods used to evaluate behaviors, attitudes, or characteristics in various populations or settings.

Standardized scales provide a consistent framework for assessment that can be used across different contexts, ensuring comparability of results. Individualized rating scales are tailored to specific cases, allowing for a more personalized approach to measurement. Behavioral observation involves systematically watching and recording behaviors in real-time, giving researchers and practitioners direct insight into how individuals function in specific environments.

In contrast, meta-analysis is not a measurement method. Instead, it refers to a statistical technique for synthesizing findings from multiple studies to derive overall conclusions. It aggregates data and evaluations to identify patterns or effects across a broader range of studies but does not directly measure variables or phenomena itself. Therefore, identifying it as not being a measurement method aligns accurately with the context of the question.