Why is skim/scan, slow down, and drawing diagrams easy to apply to learning?

This paper is about the 10 metacognition study skills. They are skim/scan, slow down. Activate prior knowledge, fit ideas together, draw diagrams, active reading, summarizing/paraphrasing, group study/teaching each other, making connections, and seek out/use feedback. Provide examples of which skills work and why you believe that to be?

Why is skim/scan, slow down, and drawing diagrams easy to apply to learning?

Why would summarizing/paraphrasing and group study/teaching each other be difficult to apply to learning?

Also this needs to be in the paper.Processing and organizing information are two challenges due to having ADHD.