George A. Miller, a cognitive psychologist, wrote a 1956 research paper titles The Magical Number Seven, Plus or Minus Two about short-term memory. His research showed that people could remember about seven discrete chunks of information. He found that the size of each chunk didn't matter. For example, people could remember seven letters or seven words. Miller's research became almost mythical, which has led to some misconceptions about human memory. Breaking up content into manageable pieces of information, therefore, reduces the cognitive load. Read More