In the middle of the twentieth century there was a transition called the 'Cognitive Revolution' in psychology. This is when psychologists began to agree that there were scientific ways to study cognition. These new beliefs about cognitive psychology were brought on by John C. Marshall's and Nora Newcombe’s study of reading, and Shallice and Warrington’s study of memory in the early 1970s. In the mid 1980s the first undergraduate book was published by Ellis & Young named "Human Cognitive Neuropsychology". There was also an emergence of new technology that made it easier to study the brain and the mind. The 1970s and 1980s was the time period that cognitive neuropsychology became visible, and many psychologists started studying it after.