How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

Test the idea that people who wear glasses tend to be more educated. True or false?

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Find out which kind of bubble wrap fares best when put in impact.

This experiment evaluates if the lighting in a room affects the speed at which test subjects perform mental tasks.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Test out various brands of permanent markers to see which one is least water soluble.

This experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.

This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

In this experiment you will use plastic and magnets to test your local soil composition.

This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.