The Best Strategy for Guessing on a Multiple-Choice Quiz

iStock
iStock

While it can be better than facing a totally blank sheet of paper, the multiple-choice quiz can still provoke a lot of anxiety and uncertainty. Students look at their options with doubt, wondering if their first instinct is the correct one or if they should double-back to fill in another circle.

Naturally, knowing the correct response is best. But if you’re in a situation where you have to guess, there’s a good way to improve your odds of getting it right. Writing for Quartz, Justin Couchman, Ph.D., an associate professor of psychology at Albright College, says that our first instinct is not as reliable as we think: Something called “endowment bias,” which is a preference for the first thing to pop into our heads, can make us too attached to our impulsive responses.

To find out whether a student’s instinctual answers stood a better chance of being correct, Couchman had his class take a psychology exam—for a real grade—and mark each answer to indicate whether they were confident in the choice or just guessing. They also indicated whether the original response was altered. Couchman found that revising the first answer gave students a better chance of being correct than if they stuck with their gut-instinct first response.

In another experiment, Couchman had students rate confidence in their answers on a scale from one to five but had them stick with their original answers—no revisions were allowed. The ones students were most confident in tended to be correct.

The takeaway, according to Couchman, is that students were able to assess their feelings on a given question in the moment and then return to them for possible revision. By looking at their own self-assessment—a form of metacognition, the act of thinking about thinking—they could choose to alter answers they had the least amount of confidence in. It’s a more objective way of gauging answers than following a blanket rule of your first instinct usually being right.

The next time you’re faced with several possible answers, rate your confidence level for each. If it’s high, stick with your initial gut response. If it’s low, revise. You’ll stand a much better chance of success than if you followed a blanket first-instinct rule or an always-revise rule.

[h/t Quartz]

10 Wireless Chargers Designed to Make Life Easier

La Lucia/Moshi
La Lucia/Moshi

While our smart devices and gadgets are necessary in our everyday life, the worst part is the clumsy collection of cords and chargers that go along with them. Thankfully, there are more streamlined ways to keep your phone, AirPods, Apple Watch, and other electronics powered-up. Check out these 10 wireless chargers that are designed to make your life convenient and connected.

1. Otto Q Wireless Fast Charging Pad; $40

Otto Q Wireless Fast Charging Pad
Moshi

Touted as one of the world's fastest chargers, this wireless model from Moshi is ideal for anyone looking to power-up their phone or AirPods in a hurry. It sports a soft, cushioned design and features a proprietary Q-coil module that allows it to charge through a case as thick as 5mm.

Buy it: Mental Floss Shop

2. Gotek Wireless Charging Music Station; $57

Gotek Wireless Charging Music Station
Rego Tech

Consolidate your bedside table with this clock, Bluetooth 5.0 speaker, and wireless charger, all in one. It comes with a built-in radio and glossy LED display with three levels of brightness to suit your style.

Buy it: Mental Floss Shop

3. BentoStack PowerHub 5000; $100 (37 percent off)

BentoStack PowerHub 5000
Function101

This compact Apple accessory organizer will wirelessly charge, port, and store your device accessories in one compact hub. It stacks to look neat and keep you from losing another small piece of equipment.

Buy it: Mental Floss Shop

4. Porto Q 5K Portable Battery with Built-in Wireless Charger; $85

Porto Q 5K Portable Battery with Built-in Wireless Charger
Moshi

This wireless charger doubles as a portable battery, so when your charge dies, the backup battery will double your device’s life. Your friends will love being able to borrow a charge, too, with the easy, non-slip hook-up.

Buy it: Mental Floss Shop

5. 4-in-1 Versatile Wireless Charger; $41 (31 percent off)

4-in-1 Versatile Wireless Charger
La Lucia

Put all of those tangled cords to rest with this single, temperature-controlled charging stand that can work on four devices at once. It even has a built-in safeguard to protect against overcharging.

Buy it: Mental Floss Shop

6. GRAVITIS™ Wireless Car Charger; $20 (31 percent off)

GRAVITIS™ Wireless Car Charger
Origaudio

If you need to charge your phone while also using it as a GPS, this wireless device hooks right into the car’s air vent for safe visibility. Your device will be fully charged within two to three hours, making it perfect for road trips.

Buy it: Mental Floss Shop

7. Futura X Wireless 15W Fast Charging Pad; $35 (30 percent off)

Futura X Wireless 15W Fast Charging Pad
Bezalel

This incredibly thin, tiny charger is designed for anyone looking to declutter their desk or nightstand. Using a USB-C cord for a power source, this wireless charger features a built-in cooling system and is simple to set up—once plugged in, you just have to rest your phone on top to get it working.

Buy it: Mental Floss Shop

8. Apple Watch Wireless Charger Keychain; $20 (59 percent off)

Apple Watch Wireless Charger Keychain
Go Gadgets

This Apple Watch charger is all about convenience on the go. Simply attach the charger to your keys or backpack and wrap your Apple Watch around its magnetic center ring. The whole thing is small enough to be easily carried with you wherever you're traveling, whether you're commuting or out on a day trip.

Buy it: Mental Floss Shop

9. Wireless Charger with 30W Power Delivery & 18W Fast Charger Ports; $55 (38 percent off)

Wireless Charger from TechSmarter
TechSmarter

Fuel up to three devices at once, including a laptop, with this single unit. It can wirelessly charge or hook up to USB and USB-C to consolidate your charging station.

Buy it: Mental Floss Shop

10. FurniQi Bamboo Wireless Charging Side Table; $150 (24 percent off)

FurniQi Bamboo Wireless Charging Side Table
FoneSalesman

This bamboo table is actually a wireless charger—all you have to do is set your device down on the designated charging spot and you're good to go. Easy to construct and completely discreet, this is a novel way to charge your device while entertaining guests or just enjoying your morning coffee.

Buy it: Mental Floss Shop

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5 Ingenious Tricks for Saving Burnt Cookies

"Please bake our brethren on the middle rack next time."
"Please bake our brethren on the middle rack next time."
cnicbc/iStock via Getty Images

It doesn’t take long for cookies to go from an irresistible golden brown to a dispiriting black (especially if you're baking at a high altitude). But before you toss them in the trash and start rummaging around in your pantry for a store-bought snack, we have a few suggestions for saving that imperfect batch.

1. Grate off the burnt bits of cookie with a zester or cheese grater.

As PureWow explains, all you have to do is slide the cookie along your cheese grater to get rid of the burnt layer on the bottom. The smaller the holes, the better, so a lemon zester works well for this, too.

2. Scrape the burned part of the cookie off with a knife.

If you don’t have a cheese grater, you can get the same results with a regular knife—it just might take you an extra minute or two. Instead of slicing off the entire bottom of the cookie, hold your knife blade perpendicular to the bottom of the cookie and carefully scrape away the burnt crumbs.

3. Store the burned cookies in a jar with a piece of bread.

Even after you’ve shaved off the blackened evidence of your culinary blunder, your cookies might still be crispier than you’d prefer. Store them in an airtight container with a slice of bread—they’ll soak up the moisture and soften right up.

4. Make ice cream sandwiches with your burned cookies.

Snobby snackers won’t scoff at your grated cookies if they can’t even see the bottoms. Slather one with a nice, thick layer of ice cream, slap another one on top, and roll the edges in your favorite topping for a treat that’s better than any cookie—burnt or not.

5. Transform your burned cookies into a cookie crust.

For charred, crunchy cookies that seem beyond salvation, you can completely cut off the burnt bottoms, crush the remains, and turn them into a cookie crust for a pie or cheesecake. Here’s a simple recipe from the Pioneer Woman that calls for three ingredients: cookie crumbs, butter, and sugar.