What research design would I need to use to discover if work efficiency or productivity rises, remains constant, or declines over the years from age 20 to age 65?

Question

Quizplus · Accepted Answer

A longitudinal research design would be the best choice for examining changes in work efficiency or productivity over time from age 20 to age 65, as this design involves collecting data from the same participants at multiple time points. This would allow for the examination of individual patterns of change across a significant stretch of time. A cross-sectional design, in which data are collected from participants at a single point in time, would not provide the necessary information to examine how work efficiency or productivity changes over time. A time-lag design involves collecting data from different groups of participants at different points in time, and may not be as effective at examining individual patterns of change as a longitudinal design.

What Research Design Would I Need to Use to Discover