Which of the following could be studied from a life course perspective?

• A. What effect does the concept cohort have on the timing of when young people move out of their parents' home?
• B. What effect did 9/11 have on adults who were teenagers during that event?
• C. What is the current divorce rate?
• D. How do tax policies affect household spending?

Answer: (A)

The main idea is how the timing of life course transitions varies by birth cohort within social and historical contexts. A life course perspective looks at how people move through major life events—like leaving home—and how when those events happen is shaped by the norms, economy, and opportunities of the cohort they belong to.

Leaving home is a quintessential life course transition. Studying how the cohort a person is born into influences when they leave their parents’ house directly examines sequencing and timing of a key life event across generations. It captures how historical changes (economic conditions, family expectations, cultural norms) alter the typical age of this transition and, by extension, the length and shape of people’s life trajectories. This aligns squarely with life course thinking, which emphasizes trajectories, transitions, and the influence of context over time.

The other options don’t align as cleanly with this perspective. Looking at the impact of a historical event like 9/11 on individuals who were teenagers then can be studied from a life course angle, but it centers on a specific shock and its effects on a particular life stage rather than the broader timing of a standard life transition across cohorts. A current divorce rate provides a cross-sectional snapshot rather than a longitudinal view of life trajectories. Tax policy effects on household spending deal more with macroeconomic behavior than the sequencing of individual life events.