You will be presented with triplets of objects, which will be assigned to the keys N, R, and X.
In each trial, please indicate which object you think is the odd one out by pressing the corresponding key.
In other words, please choose the object that is the least similar to the other two.

N: videogame, R: rattlesnake, and X: mattress. You press <<R>>.
N: awning, R: sand, and X: saxophone. You press <<X>>.
N: detonator, R: plaster cast, and X: easter egg. You press <<X>>.
N: sail, R: piano, and X: unicycle. You press <<X>>.
N: onion, R: chinchilla, and X: rudder. You press <<R>>.
N: closet, R: stake, and X: gargoyle. You press <<R>>.
N: firecracker, R: blouse, and X: uniform. You press <<N>>.
N: ink, R: dress, and X: paper towel. You press <<X>>.
N: pitchfork, R: racket, and X: trowel. You press <<R>>.
N: dog, R: bouquet, and X: axe. You press <<N>>.
N: gong, R: candy bar, and X: cannonball. You press <<R>>.
N: bobsled, R: pony, and X: waffle. You press <<R>>.
N: envelope, R: paper towel, and X: magnifier. You press <<X>>.
N: solar panel, R: clam, and X: machete. You press <<R>>.
N: coin, R: pretzel, and X: braid. You press <<N>>.
N: broccoli, R: fishing pole, and X: barbed wire. You press <<N>>.
N: nail file, R: computer, and X: casserole. You press <<X>>.
N: motorcycle, R: pipe, and X: bonnet. You press <<N>>.
N: checkers, R: chessboard, and X: pelican. You press <<X>>.
N: cross, R: staple gun, and X: cassette. You press <<R>>.