You will be presented with triplets of objects, which will be assigned to the keys O, Z, and U.
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.

O: trombone, Z: cookie sheet, and U: gold. You press <<Z>>.
O: hotplate, Z: traffic light, and U: pot. You press <<Z>>.
O: clarinet, Z: hookah, and U: projector. You press <<U>>.
O: paper plate, Z: turban, and U: sponge. You press <<O>>.
O: spaghetti, Z: moss, and U: bread. You press <<Z>>.
O: puck, Z: panda, and U: string cheese. You press <<U>>.
O: cranberry, Z: cupcake, and U: pine tree. You press <<U>>.
O: gravy, Z: brace, and U: inhaler. You press <<O>>.
O: plug, Z: teapot, and U: train. You press <<O>>.
O: bear, Z: quilt, and U: soda fountain. You press <<U>>.
O: computer, Z: seismograph, and U: microphone. You press <<U>>.
O: eggplant, Z: noisemaker, and U: skin. You press <<U>>.
O: fencepost, Z: yolk, and U: whale. You press <<U>>.
O: bank, Z: bathmat, and U: birdhouse. You press <<Z>>.
O: gumball, Z: vise, and U: candle. You press <<Z>>.
O: clipboard, Z: grater, and U: baseball. You press <<U>>.
O: shortbread, Z: wheat, and U: anklet. You press <<O>>.
O: flamingo, Z: bumper, and U: kimono. You press <<Z>>.
O: quad, Z: soda, and U: mustard. You press <<O>>.
O: saddle, Z: prism, and U: slug. You press <<Z>>.