What limitation does a cross sectional study have concerning continuity of development?

A cross-sectional study involves examining individuals of different ages at a single point in time. This design allows researchers to analyze and compare various age groups, but it inherently lacks the ability to track the same individuals over a period of time. As a result, cross-sectional studies don't provide insights into the continuity of development for individuals, as they do not observe changes within the same subjects as they age.

Continuity of development refers to the idea that some traits and behaviors remain stable over time, demonstrating growth and change within the same individuals. Because cross-sectional studies assess different cohorts rather than following individuals, they cannot provide data on how individual development unfolds over the lifespan. This lack of longitudinal data means that researchers cannot determine if observed differences between age groups are due to aging, generational influences, or other factors.

By understanding this limitation, it becomes clear that cross-sectional studies can highlight age-related changes, but they fall short in providing a complete picture of developmental continuity. Hence, the correct answer emphasizes that such studies do not offer insights into the continuity of an individual's development over time.