Creativity & Problem Solving
Wicked Problems: What to Do When There Is No Clean Solution
Wicked problems explained: Rittel and Webber's 10 features, tame and wicked examples, Grint's three problem types and 5 habits for making progress.
Mind & Learning Editor
Mary Alizadeh
Articles
Creativity & Problem Solving
Rubber Duck Debugging: Why Explaining a Problem Out Loud Helps You Solve It
Rubber duck debugging explained: where the method comes from, 3 research ideas behind it, when talking backfires and 5 steps for any stuck problem.
Memory & Brain Performance
Working Memory and ADHD: What's Different and What Helps
Working memory and ADHD: reviews find lower scores on average with wide overlap, and training seldom eases symptoms. 6 daily habits can ease the load.
Creativity & Problem Solving
Morning Pages: Julia Cameron's Daily Practice and Whether It Helps Creativity
Morning pages are 3 longhand pages written first thing each day. No trial has tested them; nearby writing research finds small benefits. How to try them.
Learning How to Learn
Communities of Practice: How Colleagues Teach Each Other
Communities of practice are groups that learn a shared craft by meeting regularly. The 3 elements, a classic example, and 6 steps to start one at work.
Decision Making & Critical Thinking
Expected Value Explained: A Simple Way to Weigh Risky Choices
Expected value is each payoff times its chance, added up. Worked examples with a raffle, a warranty and 2 job offers, and when the math misleads.
Decision Making & Critical Thinking
The Delphi Method: Using Anonymous Rounds to Pool Expert Judgment
The Delphi method pools expert judgment in anonymous rounds. Its 4 defining features, how to run one step by step, and what research says it can and can't do.
Mindset, Discipline & Resilience
Rejection Therapy: Does Seeking Out "No" Make You Braver?
Rejection therapy, a 2009 self-help game, means seeking out no on purpose. No trial has tested it, but research on asking shows how to try it safely.
Learning How to Learn
How to Prepare for the TOEFL While Working Full Time
How to prepare for the 2026 TOEFL on 6 to 10 hours a week: a full mock first, practice on your weakest task types, a second mock, then rest.
Decision Making & Critical Thinking
Loss Aversion: Do Losses Really Loom Larger Than Gains?
Loss aversion makes a loss sting more than an equal gain pleases. Evidence since 1979 says it is real on average, but weak or absent when stakes are small.
Memory & Brain Performance
Tip-of-the-Tongue Moments: Why Words Go Missing and How to Find Them
Most adults get a word stuck on the tip of the tongue about once a week, more often with age. Why words hide, 4 ways to find them, when to get it checked.
Memory & Brain Performance
How to Memorize a Speech Without Sounding Rehearsed
How to memorize a speech: learn the opening and close word for word, the middle as 3 to 5 points, and recite from memory on separate days instead of rereading.
Learning How to Learn
Comprehensible Input Explained: Can You Learn a Language by Listening?
Comprehensible input, Krashen's 1982 idea, builds vocabulary and listening skill, but speaking with feedback adds what input alone rarely gives.
Creativity & Problem Solving
How to Solve It: George Pólya's Four Steps, Still Useful Today
Pólya's How to Solve It in 4 steps: understand, plan, carry out, look back. The key questions, two worked examples and what later research adds.
Creativity & Problem Solving
Functional Fixedness: Why You Can't See the Obvious Solution
Functional fixedness explained: Duncker's candle problem step by step, 4 classic follow-up studies, everyday examples and ways to loosen it.
Mindset, Discipline & Resilience
Mental Toughness Explained: The Four Cs Model and Its Limits
The 4 Cs of mental toughness are control, commitment, challenge and confidence. Where the model came from, how it is measured and what critics found.
Mindset, Discipline & Resilience
Grit: What Angela Duckworth's Research Shows and Where Critics Push Back
Angela Duckworth's grit is passion and perseverance for long-term goals. What her studies found, and why a 2017 review judged the effect modest.
Decision Making & Critical Thinking
Overconfidence Bias: Why We Trust Our Own Judgment More Than We Should
Overconfidence bias has 3 forms. In studies reviewed in 2008, ranges people were 90% sure of held the answer under half the time. What helps.
Decision Making & Critical Thinking
The Slippery Slope Argument: When It's a Fallacy and When It Isn't
The slippery slope fallacy explained: 3 kinds of slope argument, everyday and work examples, and 3 questions that separate a weak chain from a fair warning.
Memory & Brain Performance
Is Photographic Memory Real? What Science Says
Is photographic memory real? No adult has passed repeated tests. Eidetic images appear in an estimated 2 to 10% of children; trained and rare memories are real.
Learning How to Learn
How to Use Dual Coding: Combining Words and Visuals When You Study
Dual coding pairs words with a visual of the same idea, giving a memory two routes back. 5 steps to use it when you study, and when pictures backfire.
Memory & Brain Performance
Context-Dependent Memory: Does Where You Study Affect What You Recall?
Context dependent memory is real but small: a 2001 meta-analysis of 93 results found a modest recall edge where you learned, and ways to work around it.
Learning How to Learn
The Four Stages of Competence: From Clueless to Automatic
The four stages of competence, best known from a 1969 column (not Maslow), with what skill research adds and why experts find their own skills hard to teach.
Creativity & Problem Solving
Six Thinking Hats: How to Look at a Problem From Every Angle
Six thinking hats, Edward de Bono's 1985 method: what each of the 6 colors covers, a sample meeting sequence with timings, and what the studies show.
Creativity & Problem Solving
Intrapreneurship Explained: Can Employees Act Like Founders Inside a Company?
Intrapreneurship means acting like a founder inside a company. Where the 1978 term came from, 2 famous examples checked, and what helps employee ventures.
Mindset, Discipline & Resilience
"Fake It Till You Make It": Does Acting Confident Work?
Does fake it till you make it work? A 17-lab test of the famous smile study found no effect. Acting confident helps most by getting you to practice.
Mindset, Discipline & Resilience
Rejection Sensitivity: Why Some People Feel It More Deeply
Rejection sensitivity, as defined by psychologists in 1996, is anxiously expecting, readily seeing and strongly reacting to rejection. Its causes are unsettled.
Decision Making & Critical Thinking
Hindsight Bias: Why Everything Seems Obvious After the Fact
Hindsight bias makes outcomes look predictable once you know them. Fischhoff's 1975 experiments, its three levels, and the one fix with evidence.
Decision Making & Critical Thinking
The OODA Loop Explained: Observe, Orient, Decide, Act
The OODA loop's 4 steps in plain words: where John Boyd's model came from, why Orient matters most, and how to use it at work, plus its limits.
Memory & Brain Performance
Prospective Memory: How to Remember to Do Things Later
Prospective memory is remembering to act later. Why calls and errands slip, and 5 fixes, led by if-then plans and reminders placed where you will act.
Memory & Brain Performance
The Types of Memory: Short-Term, Long-Term, Episodic, Semantic, and More
The main types of memory on one map: 3 stages, then long-term memory split into explicit and implicit kinds, with what each means and where experts disagree.
Creativity & Problem Solving
Lateral Thinking: Edward de Bono's Techniques Explained
Lateral thinking, Edward de Bono's 1967 idea, explained: 4 of his techniques worked through on one problem, and what the thin evidence on training shows.
Creativity & Problem Solving
The Aha Moment: What Happens in the Brain During Insight
An aha moment is a sudden reframing of a problem. What brain studies, 4 accuracy experiments and a 2025 memory study show, and which parts are still thin.
Mindset, Discipline & Resilience
Toxic Positivity: When Looking on the Bright Side Does Harm
Toxic positivity meets pain with forced cheer. A 40-country study links pressure to feel happy with worse well-being. Examples, and what to say instead.
Mindset, Discipline & Resilience
Delayed Gratification: How to Get Better at Waiting for What You Want
Delayed gratification is easier to set up than to force. 4 evidence-based ways to wait for money, food, screens or goals, and when waiting is not worth it.
Decision Making & Critical Thinking
What Is Opportunity Cost? The Hidden Price of Every Choice You Make
What is opportunity cost? The value of the best option you give up. A simple formula, time and money examples, and a 5-step check before you decide.
Decision Making & Critical Thinking
Hanlon's Razor: Why You Shouldn't Rush to Assume Malice
Hanlon's razor: don't assume malice when a mistake explains it. Its 1980 origin, the bias it corrects, a 4-step routine and its limits.
Mindset, Discipline & Resilience
How to Build Self-Confidence: What Actually Works
Albert Bandura named 4 sources of confidence in 1977. The evidence favors small wins, peer models and task feedback over power poses and affirmations.
Memory & Brain Performance
How to Improve Your Memory: What the Evidence Actually Supports
How to improve memory: 7 habits ranked by evidence, led by testing yourself and spacing reviews, and why brain games and supplements fall short.
Learning How to Learn
How to Study for an Exam: A Research-Backed Plan
How to study for an exam in 5 steps, working back from the date: map the syllabus, space sessions, test yourself, mix topics, then review.
Decision Making & Critical Thinking
The Sunk Cost Fallacy Explained: Why We Stick With Choices That Aren't Working
The sunk cost fallacy lets spent money decide. A 2012 review of 166 samples found the pull shrinks when you separate it from being nearly done.
Creativity & Problem Solving
Problem-Solving Skills: A Step-by-Step Process for Any Problem
Problem-solving skills as a 6-step process: define it, find causes, generate options, choose, test small and review, with a work and a home example.
Book Summaries & Big Ideas
The 7 Habits of Highly Effective People by Stephen R. Covey: Summary and Key Lessons
Stephen Covey's 1989 book in plain words: the 7 habits in three stages, the tools that still hold up, and what critics fault in its evidence and its framing.
Mindset, Discipline & Resilience
Conscientiousness Explained: The Personality Trait Behind Self-Discipline
Conscientiousness is the Big Five trait most consistently tied to job performance. Its 6 parts, why the effects are modest, and how it can change.
Decision Making & Critical Thinking
Occam's Razor: When the Simplest Explanation Is Best and When It Isn't
Occam's razor says prefer the explanation with fewer unsupported assumptions. 4 worked examples, and when the simple story loses.
Decision Making & Critical Thinking
Correlation vs. Causation: How to Tell the Difference
Correlation vs causation: the 4 other explanations for any link, and the questions from Bradford Hill's 1965 paper that help tell a cause from a coincidence.
Mindset, Discipline & Resilience
Locus of Control: Do You Run Your Life or Does Life Run You?
Locus of control: internal vs external, how Rotter's 1966 scale measures it, why an internal view links only modestly to work success, and if it can change.
Creativity & Problem Solving
Rapid Prototyping: Why a Rough Version Beats a Perfect Plan
Rapid prototyping means testing a rough version of an idea before you commit. The 4 levels of fidelity, what each answers, and when rough misleads.
Learning How to Learn
Metacognition Explained: How to Think About Your Own Learning
What is metacognition? Its 2 parts: judging what you know and changing how you study. Judging later, with the answer hidden, makes the first far sharper.
Mindset, Discipline & Resilience
Self-Discipline Explained: Skill, Trait, or Just a Well-Designed Life?
Self-discipline is 3 things at once: a trait, a skill and a well-designed setting. What the evidence, including failed willpower tests, says about each.
Mindset, Discipline & Resilience
Self-Compassion Explained: What Kristin Neff's Research Shows
Kristin Neff defines self-compassion in 3 parts. What research shows on distress, motivation and training, and the open dispute over how it is measured.
Memory & Brain Performance
Working Memory Explained: Your Brain's Mental Scratchpad
Working memory is the mind's small scratchpad. A 2017 review counted 9 definitions; here are the main models, how it is tested and what lowers it.
Memory & Brain Performance
Dementia Risk Factors You Can Change: What Major Reviews Conclude
A 2024 Lancet Commission links 14 changeable dementia risk factors to about 45% of cases. What WHO's 2026 guideline and trials like FINGER add.
Learning How to Learn
Test Anxiety: Why Your Mind Goes Blank and What Helps
On average across OECD countries, 55% of 15-year-olds in PISA 2015 felt very anxious before tests even when prepared. Why minds go blank, and what helps.
Learning How to Learn
Active Recall: How to Study by Testing Yourself
Active recall means answering from memory before you check. In a 2008 lab study, repeated recall, not rereading, decided what students kept a week later.
Decision Making & Critical Thinking
Mental Models Explained: A Beginner's Guide to Thinking Tools
Mental models have 2 meanings: the mind's inner simulations and a popular toolkit. What research says about which thinking tools carry over.
Decision Making & Critical Thinking
Analysis Paralysis: Why You Can't Decide and How to Get Unstuck
Analysis paralysis ties to hard trade-offs and fear of regret. Why choices stall, how solid the research is, and 5 ways to get unstuck.
Creativity & Problem Solving
Writer's Block: What Research Says About Causes and Fixes
Writer's block research since 1980 links it to rigid rules, harsh self-talk and waiting for the mood. What helps, plus a 2-week routine to test.
Creativity & Problem Solving
How to Come Up With Ideas: 12 Techniques Worth Trying
How to come up with ideas: 12 techniques, from working alone first to a walk or an AI draft, each labelled for how strong its evidence is.
Book Summaries & Big Ideas
The Psychology of Money by Morgan Housel: Summary and Key Lessons
The Psychology of Money summary: Housel's 19 stories, then the evidence on experience, compounding and 'enough' across US, Finnish and German data.
Book Summaries & Big Ideas
Atomic Habits by James Clear: Summary, Key Ideas, and Critique
An Atomic Habits summary that scores 9 of the book's ideas against habit research: which hold up, which are untested, and which the evidence contradicts.
Memory & Brain Performance
False Memories: Why You Remember Things That Never Happened
False memories can feel as certain as real ones. How they form, what makes them likelier, the Mandela effect and 5 ways to check a memory.
Mindset, Discipline & Resilience
What Is Resilience? What Decades of Research Reveal
What is resilience? The psychology definition, why long-term studies find it the most common response to hardship, and what 6 decades of research leave open.
Mindset, Discipline & Resilience
Perfectionism Explained: Healthy Striving vs. the Kind That Hurts
Perfectionism has 2 sides: very high standards, and fear of mistakes with harsh self-judgment. Research ties the second far more closely to distress.
Mindset, Discipline & Resilience
Impostor Syndrome Explained: Why So Many Capable People Feel Like Frauds
Impostor syndrome was named in 1978 and is not a diagnosis. What the research shows about who feels like a fraud, why success fails to help, and what does.
Memory & Brain Performance
How to Remember Names: A Method That Works at Parties and Meetings
4 steps for remembering names, built on the best-tested one: recall a new name to yourself soon after you hear it, then again after longer gaps.
Memory & Brain Performance
Mnemonics for Beginners: The Memory Techniques Worth Learning
4 mnemonics worth learning as a beginner, why they work, and where the evidence behind each one is solid, thin or surprisingly weak.
Memory & Brain Performance
Do Brain-Training Games Work? What Large Studies Found
Do brain-training games work? From a 2010 BBC trial to 20 years of US data, large studies find they train the game, not everyday memory.
Learning How to Learn
The 10,000-Hour Rule: What the Original Research Really Found
The 10,000-hour rule began as an average from one 1993 violin study. Later research finds practice matters but explains far less than the rule implies.
Learning How to Learn
How to Learn a Language as an Adult: What the Research Supports
Adults can learn a language well, but slowly: US government trainees study 24 to 88 weeks full-time. Five research-backed steps, and what apps can do.
Learning How to Learn
The Feynman Technique: Learn a Topic by Explaining It in Plain Words
The Feynman technique in 4 steps: explain a topic aloud in plain words, find where you stall, then fix it. What research on learning by explaining supports.
Decision Making & Critical Thinking
Groupthink: What It Is, Famous Examples, and How to Prevent It
Groupthink is a group's wish to agree overriding its judgment. Janis's 8 warning signs, the Bay of Pigs and Challenger, and what research says prevents it.
Decision Making & Critical Thinking
The Dunning–Kruger Effect: What It Really Says and What It Doesn't
The 1999 Dunning-Kruger paper never drew 'Mount Stupid'. Statistics explain part of its pattern, but two 2021 studies of about 4,000 people each found a gap.
Decision Making & Critical Thinking
How to Use a Decision Matrix: Comparing Options With Weighted Criteria
How to build a decision matrix in 6 steps: pick criteria that don't overlap, score one column at a time, weight the gaps, then test the winner.
Creativity & Problem Solving
The Incubation Effect: Why Stepping Away Solves Problems
Setting a stuck problem aside helps on average in lab studies. When a break works best, what to fill it with, and 2 popular explanations that did not hold up.
Creativity & Problem Solving
Does Brainstorming Work? What Decades of Research Show
Does brainstorming work? Since 1958, lab studies have found people working alone out-produce talking groups. Why, and when group ideas pay off.
Creativity & Problem Solving
Design Thinking Explained: The Five Stages With Examples
Design thinking in 5 stages: empathize, define, ideate, prototype and test. What each asks of you, an example, and what research supports.
Book Summaries & Big Ideas
Why We Sleep by Matthew Walker: What It Gets Right and Wrong
The Why We Sleep book, claim by claim: what a 2019 critique, Walker's own replies and later reviews show about short sleep, cancer, death and one chart.
Book Summaries & Big Ideas
Thinking, Fast and Slow by Daniel Kahneman: Key Ideas and Whether They Hold Up
A Thinking, Fast and Slow summary checked against later replications: its research on choices holds up, while chapter 4's priming studies did not.
Book Summaries & Big Ideas
Deep Work by Cal Newport: Summary, Key Ideas, and Critique
A Deep Work summary and critique: Cal Newport's 4 rules, what field studies of protected work time support, and where the book's evidence runs thin.
Learning How to Learn
Learning Styles Are a Myth: What the Research Actually Shows
Nearly 9 in 10 educators surveyed believe matching teaching to a learning style helps. The few experiments designed to test that claim found no benefit.
Decision Making & Critical Thinking
Cognitive Biases Explained: Why Your Brain Takes Shortcuts
Cognitive biases are shortcuts that misfire. Anchoring and framing survived a retest in 36 samples; bias scores barely correlate.
Book Summaries & Big Ideas
Getting Things Done by David Allen: What It Gets Right and Wrong
A Getting Things Done summary and critique: what 2011 experiments support in David Allen's method, what no trial has tested, and which parts look dated.
Mindset, Discipline & Resilience
What Is a Mindset? How Your Beliefs Shape What You Do
The psychology definition of a mindset, where fixed and growth mindsets came from, and what a 12,490-student trial and 2 meta-analyses found.
Memory & Brain Performance
How Memory Works: Encoding, Storage, and Retrieval Explained
How memory works in 3 stages: encoding, storage and retrieval. Why meaning helps words stick, why you hold about 4 chunks and why recall rebuilds.
Learning How to Learn
Learning How to Learn: A Research-Backed Guide for Beginners
Learning how to learn: a 2013 review rated only 2 of 10 study techniques highly useful, self-testing and spacing. How beginners can use them, step by step.
Decision Making & Critical Thinking
How We Make Decisions: The Psychology in Plain English
How we make decisions: fast impressions, slower checks and mental shortcuts, plus which classic findings held up across 36 samples and which did not.
Creativity & Problem Solving
What Is Creativity? How Psychologists Define and Measure It
What is creativity? Psychologists define it as work that is both original and effective. How it is measured, what tests miss, and 3 myths to drop.