You will be presented with triplets of objects, which will be assigned to the keys O, B, 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.

O: feather, B: smoke alarm, and X: toilet paper. You press <<O>>.
O: nightstand, B: typewriter, and X: cash register. You press <<O>>.
O: odometer, B: water bottle, and X: tortilla. You press <<O>>.
O: smoothie, B: crystal, and X: curtain. You press <<O>>.
O: gourd, B: stethoscope, and X: splinter. You press <<O>>.
O: sewing machine, B: contact lens, and X: water cooler. You press <<O>>.
O: mitten, B: tennis ball, and X: teddy bear. You press <<X>>.
O: blimp, B: lantern, and X: jacket. You press <<O>>.
O: pepper, B: belt buckle, and X: railing. You press <<X>>.
O: saxophone, B: aquarium, and X: beaker. You press <<O>>.
O: hummus, B: sickle, and X: dough. You press <<B>>.
O: kaleidoscope, B: appetizer, and X: christmas tree. You press <<X>>.
O: cockatoo, B: ice-cream cone, and X: cotton candy. You press <<O>>.
O: cd player, B: tape measure, and X: stump. You press <<X>>.
O: scanner, B: scorpion, and X: mantle. You press <<B>>.
O: jelly bean, B: tank, and X: shell. You press <<O>>.
O: chessboard, B: bathrobe, and X: muff. You press <<O>>.
O: space shuttle, B: arm, and X: washcloth. You press <<O>>.
O: skirt, B: chive, and X: revolver. You press <<X>>.
O: ambulance, B: diskette, and X: pulley. You press <<O>>.