What best describes the difference between timing and tempo of puberty?

What best describes the difference between timing and tempo of puberty?

• A. Puberty has a fixed onset age and fixed duration across individuals.
• B. There is a specific average age at onset for puberty.
• C. There is no specific average age at onset or duration, and no relation between the age at onset and the rate of development.
• D. Timing and tempo are unrelated but there is a strong correlation.

Answer: (C)

Timing refers to when puberty begins, while tempo describes how fast puberty unfolds once it starts. Across individuals, there isn’t a fixed onset age or a fixed duration for puberty. Some adolescents begin earlier, others later, and the total time from start to completion varies widely. Importantly, starting puberty earlier does not reliably predict a faster or slower progression for most people—the pace isn’t consistently tied to when it begins. So the description that there’s no specific average age at onset or duration, and no reliable relation between the age at onset and the rate of development, best captures how timing and tempo differ.

Timing refers to when puberty begins, while tempo describes how fast puberty unfolds once it starts. Across individuals, there isn’t a fixed onset age or a fixed duration for puberty. Some adolescents begin earlier, others later, and the total time from start to completion varies widely. Importantly, starting puberty earlier does not reliably predict a faster or slower progression for most people—the pace isn’t consistently tied to when it begins. So the description that there’s no specific average age at onset or duration, and no reliable relation between the age at onset and the rate of development, best captures how timing and tempo differ.