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

P: projector, N: scrabble, and Z: whipped cream. You press <<Z>>.
P: inkwell, N: cross, and Z: hedge. You press <<Z>>.
P: corn, N: aquarium, and Z: handcuff. You press <<P>>.
P: tricycle, N: ratchet, and Z: skunk. You press <<Z>>.
P: detonator, N: rocket, and Z: tuning fork. You press <<Z>>.
P: quesadilla, N: leaf, and Z: goggles. You press <<Z>>.
P: cork, N: alpaca, and Z: oil. You press <<N>>.
P: rollerskate, N: finger, and Z: milkshake. You press <<Z>>.
P: slingshot, N: stalagmite, and Z: table. You press <<P>>.
P: spinach, N: sink, and Z: basket. You press <<P>>.
P: cigarette holder, N: basketball, and Z: mullet. You press <<Z>>.
P: ballot box, N: thorn, and Z: catapult. You press <<N>>.
P: seismograph, N: orange rind, and Z: bathmat. You press <<N>>.
P: drawer, N: rhinoceros, and Z: toad. You press <<P>>.
P: sunflower, N: calamari, and Z: memory stick. You press <<Z>>.
P: badger, N: pliers, and Z: chisel. You press <<P>>.
P: hard disk, N: screwdriver, and Z: hairpin. You press <<Z>>.
P: torso, N: stove, and Z: golf club. You press <<P>>.
P: cash machine, N: crucifix, and Z: drum. You press <<N>>.
P: hanger, N: pea, and Z: hourglass. You press <<Z>>.