Explore Westonci.ca, the leading Q&A site where experts provide accurate and helpful answers to all your questions. Connect with a community of experts ready to provide precise solutions to your questions quickly and accurately. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

Dr. Samuelson wants to study the impact of social media on the friendships of 20-, 40-, 60-, and 80-year-olds. He plans to follow each age group for 10 years and study their use of social media and their relationships. What type of study is dr. Samuelson conducting?.