You will be presented with triplets of objects, which will be assigned to the keys P, U, and K.
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: nest, U: chest, and K: spur. You press <<P>>.
P: boulder, U: hotdog, and K: stalagmite. You press <<U>>.
P: corsage, U: toothbrush, and K: bagpipe. You press <<P>>.
P: tile, U: wig, and K: tackle. You press <<U>>.
P: turtle, U: groundhog, and K: turf. You press <<K>>.
P: beetle, U: cocktail, and K: leopard. You press <<U>>.
P: zipper, U: towel, and K: handkerchief. You press <<P>>.
P: green beans, U: wine cooler, and K: thread. You press <<P>>.
P: lollipop, U: scooter, and K: camera. You press <<P>>.
P: sombrero, U: dial, and K: mousepad. You press <<K>>.
P: rearview mirror, U: squid, and K: cannonball. You press <<U>>.
P: celery, U: recorder, and K: souffle. You press <<U>>.
P: diaper, U: calzone, and K: frog. You press <<K>>.
P: penlight, U: roulette wheel, and K: dishwasher. You press <<U>>.
P: life jacket, U: ice-cream cone, and K: scone. You press <<P>>.
P: doormat, U: tray, and K: doll. You press <<K>>.
P: beaker, U: sand, and K: cream. You press <<P>>.
P: shopping basket, U: watermelon, and K: dreidel. You press <<K>>.
P: toilet paper, U: top hat, and K: seaplane. You press <<U>>.
P: peanut butter, U: poker, and K: curling iron. You press <<P>>.