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This science fair project idea investigates whether body language and heart rate can decipher who's lying and who's not.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

This science fair project idea determines the way in which color affects memorization.

This science fair project idea studies how how do readers predict what events will happen next while reading a story.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea determines if females or males tend to do better on optical illusion tests and whether certain age groups also do better.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

The objective of this science project is to determine whether the brain first processes colors, shapes, or words when given conflicting messages.

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

This cool music science fair project idea has kids determine the effect of music on memory. Can music improve our cognitive abilities? Why or why not?

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science project allows students to study the psychology of happiness.

This science project has students study the idea of human beauty.

This science fair experiment examines the relationship between gender, age, and smiling.

This project is about after-images and what possibly affects them.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

In this project, a mnemonic is used to test how it increases memory.

In this project, different childproof containers are tested to see how childproof they really are.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

The objective of this science fair project is to understand the effects of multitasking on the quality of work that is produced.

This science project idea's objective is to understand how TV mysteries change expectations of mystery stories.

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.