Pick the Odd One Out!

Choosing an odd item is a staple in IQ tests. Do you know why? Because they check several abilities at once very quickly. They test our ability to divide items into categories, our ability to identify these groups, to understand the laws that govern them and then use that information to deduce which of the items' groups doesn't belong with the others. It's a great mental exercise and that's why we brought it for your enjoyment today. The following 15 questions have one mandate: Find the odd one out!
 
 
Pick the odd one out:
Nail
Hammer
Screw
Pin
 
 
Pick the odd one out:
Leaf
Tree
Branch
Twig
 
 
Pick the odd one out:
Dublin
Paris
Berlin
Barcelona
 
 
Pick the odd one out:
Biweekly
Bimonthly
Bilingual
Biannual
 
 
Pick the odd one out:
Galaxy
Planet
Universe
Star
 
 
Pick the odd one out:
Crib
Mattress
Blanket
Sheet
 
 
Pick the odd one out:
Carrot
Tomato
Ginger
Potato
 
 
Pick the odd one out:
Wolf
Giraffe
Deer
Horse
 
 
Pick the odd one out:
Rooftop
House
Hall
Basement
 
 
Pick the odd one out:
Sphere
Cube
Cone
Rectangle
 
 
Pick the odd one out:
Oats
Barley
Cereal
Rye
 
 
Pick the odd one out:
Trite
Banal
Telling
Hackneyed
 
 
Pick the odd one out:
Flounder
Shark
Dolphin
Tuna
 
 
Pick the odd one out:
Car-Engine
Ink-Pen
Ticket-Plane
Stamp-Letter
 
 
Pick the odd one out:
Pencil
Pen
Rollerball
Ballpoint
You Need to Rethink Your Thinking
You got a low score on this test! Why? Maybe you should look at the way you judge what's odd? Granted, we don't all think alike, and there could be ways you may have thought (or overthought) that changed the result. Try to think of the obvious differences between groups of items, and maybe try again before checking for the right answers below.
Pretty Good!
You're not bad at using your logic to deduce and understand the laws that govern groups of items and ideas together. This is an important cognitive tool we use every day without even thinking about it, and it's important to see that your brain is healthy and able to do it. Still, you had some mistakes, so have a look below to find them out!
Top Scores!
Excellent! You reached the top scores on this quiz, so obviously you have mastered the cognitive ability of understanding the laws that govern groups of items or ideas, and using that information to make deductions that helped you answer these questions. This is an important ability for any mind and you're really good at it!
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