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

P: thumbtack, T: buggy, and D: stilt. You press <<P>>.
P: ladder, T: bus, and D: ready meal. You press <<D>>.
P: cot, T: gopher, and D: flatiron. You press <<D>>.
P: ferris wheel, T: corset, and D: goggles. You press <<D>>.
P: contact lens, T: toaster, and D: waterwheel. You press <<T>>.
P: file, T: wing, and D: kilt. You press <<D>>.
P: donut, T: canvas, and D: sawhorse. You press <<P>>.
P: hand, T: iron, and D: kazoo. You press <<P>>.
P: ferret, T: sandcastle, and D: pogo stick. You press <<T>>.
P: sticker, T: tea, and D: fireworks. You press <<T>>.
P: orangutan, T: scrabble, and D: cat. You press <<T>>.
P: seaplane, T: apple tree, and D: torpedo. You press <<T>>.
P: bulletin board, T: envelope, and D: wall. You press <<D>>.
P: apple tree, T: rooster, and D: space shuttle. You press <<D>>.
P: rope, T: barrel, and D: paint. You press <<D>>.
P: tile, T: wedding cake, and D: whistle. You press <<T>>.
P: birdcage, T: scooter, and D: squid. You press <<T>>.
P: detonator, T: scissors, and D: paper plate. You press <<P>>.
P: finger, T: shrimp, and D: steamroller. You press <<P>>.
P: police car, T: baseball glove, and D: mouth. You press <<T>>.