You will be presented with triplets of objects, which will be assigned to the keys D, F, and Z.
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: praying mantis, F: cushion, and Z: chin. You press <<D>>.
D: barrel, F: goalpost, and Z: leopard. You press <<Z>>.
D: moss, F: screen, and Z: jackhammer. You press <<F>>.
D: vending machine, F: christmas card, and Z: toga. You press <<F>>.
D: cranberry, F: roll, and Z: slingshot. You press <<Z>>.
D: piano, F: trombone, and Z: wing. You press <<Z>>.
D: bat, F: crystal, and Z: headdress. You press <<D>>.
D: flute, F: bungee, and Z: vest. You press <<F>>.
D: polaroid, F: column, and Z: goggles. You press <<Z>>.
D: lightbulb, F: stove, and Z: reel. You press <<F>>.
D: tarantula, F: racehorse, and Z: headband. You press <<Z>>.
D: caterpillar, F: cocoon, and Z: gel. You press <<Z>>.
D: water fountain, F: pheasant, and Z: urn. You press <<F>>.
D: defibrillator, F: blowtorch, and Z: pogo stick. You press <<Z>>.
D: washboard, F: tree trunk, and Z: meatball. You press <<Z>>.
D: mouthpiece, F: firetruck, and Z: bologna. You press <<D>>.
D: staple gun, F: breadbox, and Z: coop. You press <<F>>.
D: bison, F: mussel, and Z: gallows. You press <<Z>>.
D: nacho, F: pipe, and Z: bologna. You press <<F>>.
D: dial, F: stump, and Z: scalpel. You press <<Z>>.