You will be presented with triplets of objects, which will be assigned to the keys W, R, 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.

W: outlet, R: giraffe, and U: floss. You press <<R>>.
W: eye, R: incubator, and U: bow. You press <<W>>.
W: wok, R: wrapping paper, and U: tray. You press <<R>>.
W: playing card, R: handprint, and U: mop. You press <<R>>.
W: balance beam, R: stalagmite, and U: cinnamon. You press <<U>>.
W: lab coat, R: switch, and U: pantyhose. You press <<R>>.
W: pitchfork, R: swing, and U: snowsuit. You press <<U>>.
W: camel, R: arm, and U: hummingbird. You press <<R>>.
W: muffin, R: airbag, and U: baton. You press <<W>>.
W: undershirt, R: smoothie, and U: kettle. You press <<W>>.
W: doorhandle, R: sewage, and U: birthday cake. You press <<R>>.
W: sewage, R: torpedo, and U: bean. You press <<R>>.
W: credit card, R: pin, and U: keg. You press <<W>>.
W: soda fountain, R: fudge, and U: aardvark. You press <<U>>.
W: swab, R: straightjacket, and U: doorbell. You press <<W>>.
W: thread, R: grater, and U: kite. You press <<R>>.
W: cement mixer, R: mandolin, and U: apple tree. You press <<U>>.
W: overalls, R: ivy, and U: mustache. You press <<R>>.
W: cardinal, R: pillow, and U: trophy. You press <<W>>.
W: bin, R: mantle, and U: chicken. You press <<U>>.