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

R: letter opener, I: barcode, and Q: whip. You press <<I>>.
R: tuning fork, I: suit, and Q: brick. You press <<I>>.
R: fruitcake, I: home plate, and Q: cardigan. You press <<I>>.
R: canister, I: shawl, and Q: dough. You press <<I>>.
R: helicopter, I: cereal, and Q: nail file. You press <<I>>.
R: teepee, I: block, and Q: boar. You press <<I>>.
R: chest, I: man, and Q: swan. You press <<Q>>.
R: razor, I: top hat, and Q: cash machine. You press <<Q>>.
R: mousse, I: nest, and Q: scooter. You press <<R>>.
R: keg, I: spark plug, and Q: lantern. You press <<Q>>.
R: thread, I: stool, and Q: ladder. You press <<R>>.
R: phone booth, I: trident, and Q: radiator. You press <<R>>.
R: plant, I: peg, and Q: spring roll. You press <<R>>.
R: visor, I: pear, and Q: mouth. You press <<Q>>.
R: mailbox, I: fire alarm, and Q: chive. You press <<Q>>.
R: gift, I: tricycle, and Q: swing set. You press <<Q>>.
R: swordfish, I: clove, and Q: fence. You press <<R>>.
R: shovel, I: cauliflower, and Q: whipped cream. You press <<R>>.
R: cummerbund, I: showerhead, and Q: sink. You press <<R>>.
R: skirt, I: gold, and Q: router. You press <<R>>.