You will be presented with triplets of objects, which will be assigned to the keys D, I, 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.

D: toothpaste, I: breadstick, and X: wedding cake. You press <<I>>.
D: diskette, I: button, and X: landmine. You press <<D>>.
D: fence, I: headlamp, and X: scrabble. You press <<I>>.
D: headset, I: road sign, and X: garter. You press <<I>>.
D: valve, I: periscope, and X: pendulum. You press <<X>>.
D: tractor, I: highchair, and X: sandcastle. You press <<X>>.
D: scooter, I: man, and X: dryer. You press <<I>>.
D: cleaver, I: potpie, and X: torpedo. You press <<I>>.
D: ear, I: periscope, and X: robot. You press <<X>>.
D: hubcap, I: robot, and X: scrabble. You press <<D>>.
D: noisemaker, I: doily, and X: swordfish. You press <<X>>.
D: ferris wheel, I: matchbox, and X: ironing board. You press <<D>>.
D: belt buckle, I: foam, and X: tank. You press <<I>>.
D: water fountain, I: polar bear, and X: juicer. You press <<I>>.
D: canoe, I: coffee, and X: waffle. You press <<D>>.
D: dagger, I: racket, and X: woman. You press <<X>>.
D: calculator, I: paper, and X: raisin. You press <<X>>.
D: mango, I: patch, and X: mixer. You press <<D>>.
D: hamster, I: rabbit, and X: statue. You press <<X>>.
D: cereal, I: water fountain, and X: taffy. You press <<I>>.