Summary: Classical and operant conditioning compete in the brain, preventing simultaneous learning of conflicting actions. Using fruit flies, researchers demonstrated that attempting to teach both ...

The best natural shampoos and conditioners eschew artificial ingredients for naturally derived alternatives that are generally less harsh and, in some cases, even work to actively restore balance ...

All products are independently selected by our editors. If you buy something, we may earn an affiliate commission. If your hair’s been feeling a little thirsty, it’s probably time to add a ...

Checked for accuracy by our qualified fact-checkers, verifiers and subject experts. Find out more about fact-checking at CHOICE. Portable air conditioners are useful if you don't have air conditioning ...

Clank, whoosh, beep, shudder! Portable air-conditioning units can be quite loud and distracting, especially if they're on full blast while you're working from home, watching TV or on the phone. They ...

Portable air conditioners account for almost 20 percent of the room air conditioner market, but our lab tests reveal that they deliver only mediocre performance. In fact, not a single model earns ...

The best conditioner for curly hair will bring some much-needed moisture to parched waves, curls and coils. Curly hair needs a lot more hydration than most other hair types, which is why you're likely ...

In fact, conditioners are especially crucial for men. "Most men shampoo their hair daily, or more frequently than women, causing their hair to become dry," says celebrity hairstylist Ryan Richman.