Perhaps the most import take away I’ve gotten from this class (and from reading Barbara’s book prior to this class) is that learning is deliberate. It requires concentrated effort which is always hard, but worth it. These points are nothing new to this course or to most people. What is new to me, is that learning is a process with structure and subject to our brain’s physical restrictions. Those restrictions include: 1) a working (short-term) memory which provides space for rapid processing but on average can only hold 4 concepts at once (Cowan, N. , 2001), 2) a longer term memory with almost limitless storage, but whose formation requires practiced learning and access over spaced intervals(Carpenter,et. al., 2012) and perhaps most importantly, 3) the need for recovery time. This last point is, from my point of view the most underappreciated physical limitation to learning; our brain needs rest. Our working memory is extremely energy demanding from a physiological viewpoint, which is why our ability to focus wanes after 20-30 minutes of concentrated learning. Additionally, our brains need down time to remove metabolic waste products, which is why we require sleep on a regular basis to form long term memories and consolidate learning into easily retrievable chunks (Xie Lulu, et. al., 2013).
At this point I’m going to stop and take a diversion from the assigned writing task to explain why I’m posting such a minimal effort for this assignment. Right now it’s 8:50p PDT., and this assignment is due in 10 minutes. I began writing this post about an hour ago, knowing that I wasn’t going to come close to meeting this assignments requirements or my own standards for such a task. Unfortunately, my job suddenly required all of my free time and mental energy just as I was beginning to work on this assignment. Nonetheless, I believe submitting something, however poor, is better than nothing; or as the Woody Allen quote goes, “Showing up is eighty percent of life”. 😉
References
Cowan, N. , 2001. The magical number 4 in short-term memory: A reconsideration of mental storage capacity. Behavioral and Brain Sciences, 24(1), 87-114.)
Carpenter, S. K., Cepeda, N. J., Rohrer, D., Kang, S. H. K., & Pashler, H. (2012). Using spacing to enhance diverse forms of learning: Review of recent research and implications for instruction. Educational Psychology Review, 24(3), 369-378. doi: 10.1007/s10648-012-9205-z
Xie Lulu, Hongyi Kang, Qiwu Xu, Michael J Chen, Yonghong Liao, Meenakshisundaram Thiyagarajan, John O’Donnell, et al. “Sleep Drives Metabolite Clearance from the Adult Brain.” Science, 342, no. 6156 (2013): 373-77