Pam A. Mueller and Daniel M. Oppenheimer recently published a peer reviewed article in Psychological Science provocatively titled “The Pen Is Mightier Than the Keyboard: Advantages of Longhand Over Laptop Note Taking”. Their claim would herald a significant discovery if it were true. For there are many important reasons to believe using a laptop, at least in certain ways, can increase cognitive productivity: Delving, assessing, comprehending, understanding, knowledge building, retention, learning, mastery and even mental development (deep learning). We need not retreat to the to lab refute their titular conclusion. This post, I believe, does the trick.