Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

This science fair project idea studies past and current fads and trends.

This science fair project idea investigates the relationship between memory and age.

Science fair project that determines the effect of concentrated mental effort on physical performance levels.

In this science fair project, students investigate how different colors influence appetite.

In this science fair project, students evaluate if astrological signs provide clues about people's personalities.

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.

This science fair project idea tests the efficiency of short term memory.

This science fair project idea studies the differences in gender perception between people.

This science fair project idea explores whether color affects a person's emotional state.

This science fair project idea examines whether people can decode scrambled messages.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

This science fair project evaluates the suggestibility of males versus females in copying the actions of those around them.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

In this science fair project, students evaluate if the phases of the moon affect the way people feel.

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

This science project investigates the influence of different genres of movies on appetite.

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.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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 compares the abilities of men and women to understand subtle communication through body language.

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

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

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

Is it a square or a circle? See if you can trick your friends with this zany science project!