Question: Dr. Xiong is studying how memory changes over the course of life by studying collecting data from a group of 10 year olds, a group

Dr. Xiong is studying how memory changes over the course of life by studying collecting data from a group of 10 year olds, a group of 20 year olds, a group of 30 year olds, and a group of 40 year olds, and collecting data from these same people again every 10 years. Question 20 options: a) experiment b) cross-sectional study c) longitudinal study d) sequential design

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