You will be presented with triplets of objects, which will be assigned to the keys P, R, 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: combination lock, R: lawnmower, and Z: cummerbund. You press <<Z>>.
P: plum, R: puddle, and Z: coffin. You press <<P>>.
P: face, R: couch, and Z: snowball. You press <<R>>.
P: axe, R: wax paper, and Z: clothespin. You press <<R>>.
P: denture, R: centerpiece, and Z: van. You press <<P>>.
P: lampshade, R: straw, and Z: diaper. You press <<P>>.
P: trident, R: rocking chair, and Z: iceskate. You press <<P>>.
P: waterwheel, R: latch, and Z: bagel. You press <<Z>>.
P: garter, R: tube top, and Z: bongo. You press <<Z>>.
P: cord, R: icicle, and Z: tattoo. You press <<Z>>.
P: jug, R: nail, and Z: thorn. You press <<P>>.
P: water cooler, R: cigar, and Z: bulldozer. You press <<R>>.
P: seed, R: brussels sprouts, and Z: ticktacktoe. You press <<Z>>.
P: finger, R: lighter, and Z: lava. You press <<P>>.
P: bologna, R: cilantro, and Z: candle. You press <<Z>>.
P: pacifier, R: rake, and Z: missile. You press <<Z>>.
P: bat, R: rug, and Z: wallpaper. You press <<P>>.
P: scaffolding, R: velcro, and Z: rearview mirror. You press <<Z>>.
P: bookmark, R: train car, and Z: beetle. You press <<Z>>.
P: pine tree, R: ashtray, and Z: salad. You press <<R>>.