Why Are There Righties & Lefties?

The video explores the concept of handedness, highlighting its uniqueness to humans. It discusses various theories on why most people are right-handed, including evolutionary cooperation and brain asymmetry. The video also examines how brain asymmetry influences hand dominance and how left-handed individuals process language differently. It concludes by emphasizing the importance of both hands in daily tasks.

What percentage of Major League Baseball pitchers are left-handed?

• 70%

• 50%

• 30%

• 10%

Which group of animals shows a roughly equal distribution of paw preference?

• Fish

• Birds

• Cats and dogs

• Primates

What is one theory about why humans have a dominant hand?

• To enhance survival skills

• Due to environmental factors

• To improve balance

• As a result of brain asymmetry

How do left-handed individuals often process language differently?

• They use only the left hemisphere

• They use both hemispheres more evenly

• They do not process language

• They use only the right hemisphere

What is the contralateral nature of the brain?

• Each hemisphere controls the same side of the body

• Each hemisphere controls the opposite side of the body

• Both hemispheres control both sides of the body

• Neither hemisphere controls the body