Optical illusions that challenge you to find the hidden objects and numbers are brain games that can reveal if you possess excellent visual perception, concentration, and mental speed at noticing ...

Computer workstation with Respondus LockDown Browser. Webcam built into the monitor for tests that require it. Door that can be closed for privacy while testing. These spaces are also home to our ...

Millions of Americans have allergies. You might sniffle and sneeze as the seasons change or get itchy and teary-eyed when you dust the house or pet an animal. Perhaps you start wheezing when you eat a ...

If you’re sexually active, regular testing for sexually transmitted diseases (STDs) and infections (STIs) is crucial to protect your health and the health of your partners. While you can get tested at ...

You have made an excellent choice in deciding to attend one of the top research universities in the country to begin or continue your education. Within the University Libraries at Saint Louis ...

Food intolerances, food sensitivities, and food allergies can all produce negative symptoms, ranging from undesirable to downright dangerous. Food intolerances can produce uncomfortable or ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

After a behind-closed-doors shakedown in Barcelona, Formula 1's 2026 season build-up has moved into full view with teams heading to Bahrain for official preseason testing. With all 11 new cars on ...

The visual system is the part of the central nervous system that is required for visual perception – receiving, processing and interpreting visual information to build a representation of the visual ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Genetic testing involves the detection of specific alleles, mutations, genotypes or karyotypes that are associated with heritable traits, diseases or predispositions to disease for the individual or ...

Eosinophils are a kind of white blood cell that helps fight disease. The exact role of eosinophils in your body isn't clear, but they're usually linked with allergic diseases and certain infections.