Question

Xiao is gathering research on the number of meals people eat. He gathers data about the number of daily meals eaten by 25 people at each of the following ages-10, 20, 30, 40, 50, 60, and 70 years-over the course of one week and looks for developmental differences. What type of research design is Xiao using?

Answer 1

Xiao is using a 'Cross-Sectional' Study to look for developmental differences in each individual.

Explanation:

Cross-sectional study is used to investigate a “variable” which are the “developmental differences” and “number of meals eaten daily” here, in different groups i.e., the mentioned age groups who are related to other characteristics. This research includes a group of people who differ in numbers or variable of interest but there are some characteristics like educational background, socioeconomic status and ethnicity, are shared among them equally.