Today we're going to walk through a couple of statistical approaches to answer the question: "is coffee from the local cafe, Caf-fiend, better than that other cafe, The Blend Den?" We'll build a two sample t-test which will tell us how...

Colon cancer is one of the leading causes of cancer and cancer death in the world. It is also one of the most preventable types of cancer, as it often takes about ten years for a small polyp to grow and develop into a cancerous one. So...

It turns out stereotypes can affect you-whether you believe in them or not.

After hitting on a brilliant new life plan, our first instinct is to tell someone, but Derek Sivers says it's better to keep goals secret. He presents research stretching as far back as the 1920s to show why people who talk about their...

Today we’re going to begin our discussion of probability. We’ll talk about how the addition (OR) rule, the multiplication (AND) rule, and conditional probabilities help us figure out the likelihood of sequences of events happening - from...

For the past 70 years, scientists in Britain have been studying thousands of children through their lives to find out why some end up happy and healthy while others struggle. It's the longest-running study of human development in the...

After Darwin blew the doors off the scientific community, a lot of people did some weird and unscientific stuff with his ideas. Francis Galton and a few others decided natural selection could be used to make the human race "better" and...

So, how many different kinds of intelligence are there? And what is the G-Factor? Eugenics? Have you ever taken an IQ Test? All of these things play into the fascinating and sometimes icky history of Intelligence Testing. In this episode...

You’ve probably been there before, working hard on your job until your brain gets all mushy and fuzzy. But small breaks, like watching this video, can help you in multiple ways! Just, don’t fall into any cat video rabbit holes.

All life on Earth— living and inanimate, microscopic and cosmic— is governed by mathematical laws with apparently arbitrary constants. And this opens up a question: If the universe is completely governed by these laws, couldn't a...

Maybe you've seen a shooting star, a bright streak of light that zips across the sky! But did you know that those shooting stars are actually rocks falling from space? And sometimes you can find them on the ground! Find out how...

It turns out that saving all of your studying until after midnight on the night before your big exam is not actually a great way to prepare. Today, Thomas explains some test prep strategies that actually work.

Exams can be terrifying. It's easy to feel like the weight of the world rests in these moments - like this one test determines your grades and, in turn, your whole future - even if you know, rationally, that this isn't really the case....

Hank reports on some new discoveries: one which points towards the existence of dark matter with the "majorana particle" and another, which points towards the existence of life on Mars. Exciting stuff!

A new virus emerges and spreads like wildfire. In order to contain it, researchers must first collect data about who's been infected. Two main viral testing techniques are critical: one tells you if you have the virus and the other shows...

Today we're going to talk about p-hacking (also called data dredging or data fishing). P-hacking is when data is analyzed to find patterns that produce statistically significant results, even if there really isn't an underlying effect,...

Don't you think it would be nice if you had a photographic memory? But is it actually a thing?

In 1942, a mother-daughter duo named Katharine Cook Briggs and Isabel Briggs Myers developed a questionnaire that classified people's personalities into 16 types. Called the Myers-Briggs Type Indicator, or MBTI, it would go on to become...

Paul Riario dives into the all-new Suhr Oso — a short-scale powerhouse that blends vintage vibe with modern finesse. Designed by John Suhr, the Oso reimagines a classic T with blind fret ends, compact spacing, and unmatched playability....

Guitar World's Paul Riario heads over to Marshall HQ in NYC to demo the new Marshall JCM800 Modified. This amp delivers iconic Marshall sound with modern upgrades, including master volume, a mid-boost switch and gain boost

Does a positive test mean that you have a disease? Does a negative test mean you're healthy? Unfortunately, the answer to both these questions isn't a definitive "yes". How good a test is depends on it's sensitivity and specificity....

Whenever I give a talk on the sorry state of the US health care system, someone asks me what we should do. My first comment is always something along the lines of "if we knew what to do, we'd have already done it". But if I'm pushed, I...

Guitar World's Pete Emery tests the Boss XS-1 and XS-100 Poly Shifter pedals. These polyphonic pitch-shifters allow you to create sweeping pitch bends, fast-tracking drop tunings, harmony effects and more at the flick of a switch.

Guitar World's Pete Emery tests PRS' budget Tele killer, the SE NF 53.