Psychology
fromPsychology Today
8 hours agoHow We Learn to Be Wrong Together
Agreement often feels safer than the pursuit of truth, leading to a conflict between belonging and clarity.
The forgetting curve explains how quickly people lose newly learned information if it is not reinforced. First introduced by Hermann Ebbinghaus in the late 19th century, the Ebbinghaus forgetting curve demonstrates that we forget information quickly after we first learn it, and then the rate of forgetting slows down over time.
US researchers found that engaging in intellectually stimulating activities throughout life, such as reading, writing or learning a new language, was associated with a lower risk of Alzheimer's disease, the most common form of dementia, and slower cognitive decline. The study author Andrea Zammit, of Rush University Medical Center in Chicago, said the discovery suggested cognitive health in later life was strongly influenced by lifelong exposure to intellectually stimulating environments.
You know that sinking feeling when you realize you've been using a phrase that makes you sound less intelligent than you actually are? I had one of those moments a few years back during a pitch meeting for my startup. I was presenting to potential investors, and I kept saying "I think" before every point I made. "I think our user acquisition strategy will work."
Parents often hear the warning: "If your child doesn't learn a second language early, they'll never be fluent." Adults, meanwhile, are told: "It's just too late for you to learn now." These claims are familiar and tidy, but misleading. Are they actually true? Is it better to learn a second language as a child or as an adult? The short answer is that it depends on what we mean by "better."
The human brain is engineered to ignore most of what it sees and hears, according to the neuroscientists I interviewed for the audio original Viral Voices. If that's the case, how are you supposed to make a memorable impression? The empowering news is that if you understand how the brain works, what it discards, and what it pays attention to, you'll be far more persuasive than you've ever imagined. Persuasive people have influence in their personal and professional lives.
It might come as a surprise to learn that the brain responds to training in much the same way as our muscles, even though most of us never think about it that way. Clear thinking, focus, creativity, and good judgment are built through challenge, when the brain is asked to stretch beyond routine rather than run on autopilot. That slight mental discomfort is often the sign that the brain is actually being trained, a lot like that good workout burn in your muscles.
Collective learning is how a group or system creates, improves, and keeps knowledge. This knowledge lasts beyond any one person or cohort. That is the most practical collective learning definition, because it shifts the focus away from individuals and toward the learning system itself.
"To enable the next generation of foundation models, we must solve the problem of continual learning: enabling AI systems to keep learning and improving over time, similar to how humans accumulate knowledge and refine skills throughout their lives," the researchers noted. Reinforcement learning offers a way to train on data generated by the model's own policy, which reduces forgetting. However, it typically requires explicit reward functions, which are not easy in every situation.
Neuroscientists have a name for the brain network that fires up when you're not focused on an external task: the default mode network, or DMN. It's the constellation of regions - the medial prefrontal cortex, posterior cingulate cortex, and angular gyrus among them - that hums to life when you daydream, reflect on yourself, or think about other people's mental states.
Rumination activates the default mode network (DMN) - the brain's self-referential processing system. This is the neural circuitry that fires when you're thinking about yourself in relation to others: your identity, your social standing, your mistakes. It's the brain asking, over and over, What does this say about me?
Take the sur­prise some have expressed in recent years upon find­ing out that the expres­sion to "pic­ture" some­thing in one's head isn't just a fig­ure of speech. You mean that peo­ple "pic­tur­ing an apple," say, haven't been just think­ing about an apple, but actu­al­ly see­ing one in their heads? The inabil­i­ty to do that has a name: aphan­ta­sia, from the Greek word phan­ta­sia, "image," and prefix - a, "with­out."
Psychologists who study narrative identity have found that elderly individuals often repeat specific stories as a way of preserving and transmitting their core identity and values. These aren't random tales that bubble up from failing memory. They're carefully curated selections from a lifetime of experiences, chosen unconsciously for their significance.