One of the most damaging myths in education is that there is a conflict between memorisation and understanding, when in fact, they go together, and are both essential. This is one of the ideas demolished by Daisy Christodoulou in Seven Myths, under the heading of ‘facts prevent understanding’. The classic piece of research by Nobel laureate Herbert Simon on chess players shows how memorising and understanding are not in conflict; rather, they are intertwined and interdependent. Chess grand masters can look briefly at a chess board and then remember the positions of the pieces far better than those not skilled in chess. But they could only do this when the pieces were arranged as they would be in a game scenario. When they were randomly arranged, the chess players performed no better than the average.
The chess grand master’s supreme skill is based largely on memorising tens of thousands of game scenarios. Most of the time, most of what a grand master is doing in a chess game is remembering. This is not in conflict with understanding. Obviously the grand master understands the rules of chess, but then so does someone who is only a beginner. What distinguishes the grand master from the beginner is the difference between their long term memories. One is well-stocked with chess moves and scenarios, while the other isn’t. If the beginner wants to advance, she needs to put in the effort and get memorising. She needs to be drilled, or drill herself. She needs to study hard.
This applies to every academic subject. Understanding and memorisation are both essential, but the majority of the effort must go into memorising, because a pupil can grasp a concept readily in a lesson, but quickly forget it, because she has not been drilled in class, nor has she been required to self-quiz for homework to consolidate the knowledge, nor has she been tested at intervals to make sure it does not fade. Drilling, self-quizzing, testing at intervals: these are the foundations of teaching which enable everyone to make progress, because memorisation is absolutely essential, and it strengthens and consolidates understanding. Without the knowledge in your mind, how can you think about it? It is the lack of these foundations which leads to the lament which I have heard so often in so many staff rooms: “I taught them that material. Why can’t they remember it? Why did so many fail the end of term exam?”
It is because of the false distinction between understanding and memorisation that teachers do not focus anywhere near enough time on making sure the foundations are in place. The bulk of class and homework time needs to be dedicated to making sure that core knowledge is thoroughly mastered. If this is not done, then only the most able and motivated will make much progress. The most able and motivated may well then go on to become education professors, and because they were not required to memorise, they’ll think that everyone else can just blithely sail along without the hard work of deliberately committing key facts and procedures to memory.
This is known as expert blindness, and the more gifted a person is, the more likely they are to suffer from it. But all teachers suffer from it to some extent, and to overcome it, we need good programmes of instruction which emphasise drill and repeated practice. We can’t depend upon our gut feeling, or even our ‘professional judgement’, to know when something has been practised enough.