Make It Stick Book Summary
The Science of Successful Learning
Book by Peter Brown, Henry Roediger, Mark McDaniel
Summary
Make It Stick offers powerful, evidence-based strategies for deeper, more durable learning - spacing, retrieval, interleaving, elaboration, generation, and reflection - that challenge conventional study habits and unlock our full learning potential.
The Illusions of Knowing
Many common study habits turn out to be counterproductive. Highlighting, underlining, and rereading textbooks feels productive, but these methods create an illusion of mastery. In reality, they lead to shallow learning that fades quickly. Similarly, cramming for exams often produces better short-term recall but poorer long-term retention compared to spaced practice. We are poor judges of when we are learning well, so becoming adept at self-quizzing is key to calibrating our understanding and breaking these illusions of knowing.
Section: 1, Chapter: 1
The Learning Power of Generation
Having to generate an answer or solution to a problem rather than being presented with it leads to stronger learning and retention, even when the generated answer is wrong. Generation can take many forms, such as trying to solve a problem before being shown the solution, writing your own summary of a text after reading it, or mapping out a chapter from memory. The effort to bring knowledge to mind strengthens the memory trace and creates more versatile connections to what you already know.
Section: 1, Chapter: 1
The Testing Effect
Retrieval practice, such as quizzing yourself on what you've learned, is a powerful learning strategy. Retrieving knowledge from memory strengthens the memory trace and interrupts forgetting. Testing also helps you identify gaps in your understanding for further study. To apply this:
- Incorporate frequent low-stakes quizzes into your study routine
- Create flashcards to test your memory of key concepts, not just facts
- After each class or reading, write down the central ideas from memory
- Test yourself again on old material to keep it fresh
Section: 1, Chapter: 2
This concept is also discussed in:
A Mind For Numbers
Reflection as Practice
After a challenging surgery, the neurosurgeon Mike Ebersold reflects on what could have gone better:
"A lot of times something would come up in surgery that I had difficulty with, and then I'd go home that night thinking about what happened and what could I do, for example, to improve the way a suturing went. How can I take a bigger bite with my needle, or a smaller bite, or should the stitches be closer together? What if I modified it this way or that way? Then the next day back, I'd try that and see if it worked better."
This mental rehearsal is a potent form of retrieval practice. By imagining alternatives and connecting them to his previous knowledge, Dr. Ebersold is expanding his mental models. Reflection works memory traces from different angles, strengthening mastery and preparing him to handle future variations.
Section: 1, Chapter: 2
Spaced Practice Beats Cramming
In a study of surgical residents learning microsurgery skills, one group crammed their training into a single intensive session, while another group had the same training spread out in smaller sessions over multiple weeks. When tested a month later, the residents who had spaced out their practice significantly outperformed those who had crammed. Some of the crammers even permanently damaged the nerves of the rats they were operating on due to lack of skill.
Section: 1, Chapter: 3
The Myth of Massed Practice
Massed practice (cramming, single-mindedly focusing on one skill at a time) feels more productive than spaced, interleaved, or varied practice, but that feeling is deceptive. Massed practice produces quick gains that also fade quickly. In contrast:
- Spaced practice: Spacing out study of the same material over time
- Interleaved practice: Mixing practice of different but related skills
- Varied practice: Introducing variation into how you practice a skill
These methods are more effortful and feel less productive in the moment but lead to more durable, flexible learning. The effort required to retrieve the learning after a little forgetting has set in is what builds habit strength.
Section: 1, Chapter: 3
Mastery Requires Struggle
"When you space out practice at a task and get a little rusty between sessions, or you interleave the practice of two or more subjects, retrieval is harder and feels less productive, but the effort produces longer lasting learning and enables more versatile application of it in later settings."
Section: 1, Chapter: 3
Embrace Difficulties For Stronger Learning
Learning that is easy often doesn't stick. Difficulties that feel counterproductive, like spacing out practice, interleaving different topics, varying practice, and generation, actually lead to stronger long-term learning. The increased effort required to retrieve the learning after a lapse or to apply it in varied contexts strengthens memory traces and builds mental models that are more versatile for later application. Effective learning strategies tend to be more effortful than unproductive ones.
Section: 1, Chapter: 4
Jump In, Make Mistakes, Learn
Mia Blundetto, a US Marine Corps officer, had to learn parachute training on the job to lead a platoon in parachute operations. The training was difficult and sometimes scary. On one jump, Mia collided with another jumper, their parachutes tangling. Mia relates: "I realized that I was on top of the first jumper, so I just sort of swam out of his parachute and steered away from him."
Jumping out of an airplane is an extreme example, but learning by doing, even imperfectly at first, is often more effective than trying to perfectly prepare through bookwork alone. Mia's training gave her the skills to operate under pressure and adapt to difficulties. Getting into the field, making mistakes, and learning from them is often the fastest route to competence.
Section: 1, Chapter: 4