Watch the video and read the 4 research studies. Read the full articles, not merely the abstracts. Then consider the differences between causation and correlation or association. Descriptive (retrospective) studies can never infer causation - they can only identify an association. Only rigorous experimental studies with strong p-values can infer causation. This is a fundamental piece of understanding about research! After watching the video and reading the articles, describe your understanding of causation vs. association. You may include a diagram or example. You should include implications to some aspect of maternal-child health. Video to watch: https://youtu.be/VMUQSMFGBDo This assignment must be in APA format, and a minimum of 1,000 words.