The World's Best Book Summaries
What is infinity? How can we easily understand the concept of infinity? Infinity is a hard concept to grasp logically. The Beginning of Infinity‘s author David Deutsch believes that the human mind has a natural aversion to it. That’s why he found a way of explaining it that anybody can understand. Read more to have a better understanding of infinity as a concept.
What is a neurotransmitter? What are the key neurotransmitters that shape our behavior and moods? Neurotransmitters are chemical messengers in the brain that pass on signals between the brain’s cells—neurons. Neurotransmitters play a key role in how you feel and act moment to moment. There are dozens of neurotransmitters at work in the human brain, but the most noteworthy ones are dopamine, serotonin, oxytocin, and testosterone. Let’s take a look at the major brain neurotransmitters and how they drive behavior.
What is the function of the amygdala? What behavior does the amygdala govern? The amygdala is a little almond-shaped structure located in the brain’s medial temporal lobe. Its main function is to respond to threats, whether real or perceived. The amygdala activates very fast, often overriding logic and rationality. Here’s a look at the amygdala’s function and the psychology behind its workings.
What is Robert Sapolsky’s Behave about? What is the key message to take away from the book? Understanding people is crucial to disciplines and careers ranging from psychology to sales. While there are countless books about how to relate to people—and sometimes how to manipulate them—few try to get to the core of human behavior in the same way that Sapolsky’s Behave: The Biology of Humans at Our Best and Worst does. Below is a brief overview of the key themes.
What is the connection between evolution and behavior? What are some examples of human behaviors that have survival value? Our brains work the way they do because of evolution: Ancestors who behaved in certain ways were more likely to survive and reproduce, passing on the genes that caused them to behave in those ways. So now, many generations later, those genes still survive in us and influence our behavior. Let’s examine the key categories of human behavior that are the product of evolution.
How does fasting promote weight loss? What is the mechanism behind the weight loss effect of fasting? Your body has a powerful built-in fat-burning mechanism that’s activated by fasting. However, weight loss isn’t immediate once you start fasting. Since our bodies are used to overeating, we need to teach them to access our fat stores again. When you start fasting, your body won’t yet know how to burn fat and will instead slow your metabolism to save energy until you can eat again. Here’s a look at the science behind fasting and weight loss.
What is the kin selection theory? Why do we feel compelled to protect our family members at all costs? Kin selection is a term in evolutionary biology that means potentially sacrificing your own welfare or reproductive success in favor of your relatives’. For example, risking your life by fighting off a home intruder to protect your family. It evolved because, by definition, your relatives share many of your genes, so keeping them alive helps pass those genes on. Keep reading to learn about the psychology behind kin selection.
Does stress cause cancer? How can stress lead to growth of cancerous cells? In his book When the Body Says No, Dr. Gabor Maté explains that certain cancers result from hormonal changes, and hormones can be affected by stress. Therefore, chronic stress can cause a domino effect, eventually leading to the growth of cancerous cells in the body. Here’s a look at the link between stress and cancer.
What’s the connection between environment and behavior? Can environment override genetic influences? There’s no doubt that genes determine much of your personality and behavior. However, external influences—including how we’re raised, where we are at a given moment, and what’s happening around us—are even more important in determining how we act. Keep reading to learn how environment shapes human behavior, according to Sapolsky.
What is the Triune brain? What are the three levels of the brain, according to the Triune theory? In the Triune brain model, the brain is divided into three levels: the neocortex, the limbic system, and the reptilian complex. According to this model, each level is self-contained in the sense that it doesn’t interact with the other two. In reality, the whole brain is interconnected, so this model should be taken metaphorically, not literally. Keep reading to learn about the three levels of the brain, according to the Triune brain theory.