Which of the following is not a product-oriented investigation?

The reason that developmental changes in movement patterns over time is not considered a product-oriented investigation is that this approach focuses on understanding the process and progression of motor development rather than the end results or outcomes of that development. In product-oriented investigations, the emphasis is on measurable outcomes such as performance results, physiological responses, or skill proficiency at a specific point in time.

In contrast, examining developmental changes in movement patterns emphasizes the underlying processes and developmental stages that lead to those patterns — which are characteristic of a more process-oriented perspective. This approach is concerned with how motor skills evolve and improve over time, rather than simply evaluating the performance at a particular point without considering the progression or learning that occurred.