Which of the Following Is a Necessary Component of a Longitudinal

question 48

Multiple Choice

Which of the following is a necessary component of a longitudinal design?

• A) Measuring the same variables at two points in time
• B) Measuring at least four variables at one time
• C) Measuring different age groups at two different times
• D) Manipulating a variable at two points in time
• E) None of the above

---

Definitions:

Credit Sales

Sales made on credit, where the payment from the buyer is deferred to a later date.