You will be presented with triplets of objects, which will be assigned to the keys O, D, and R.
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: sandbag, D: celery, and R: coop. You press <<D>>.
O: hearing aid, D: wheelchair, and R: reindeer. You press <<R>>.
O: ski, D: chalice, and R: slingshot. You press <<R>>.
O: hand, D: tag, and R: scrabble. You press <<O>>.
O: emerald, D: tape measure, and R: baton. You press <<D>>.
O: bathtub, D: briefcase, and R: ice cube. You press <<D>>.
O: jewel, D: retainer, and R: kneepad. You press <<R>>.
O: taco, D: fly, and R: toothpaste. You press <<D>>.
O: licorice, D: oilcan, and R: stiletto. You press <<R>>.
O: groundhog, D: mushroom, and R: turntable. You press <<R>>.
O: guinea pig, D: coaster, and R: hedge. You press <<D>>.
O: gyroscope, D: siren, and R: plate. You press <<R>>.
O: backpack, D: contact lens, and R: skirt. You press <<D>>.
O: whisk, D: peach, and R: hopscotch. You press <<R>>.
O: beetle, D: computer screen, and R: fish. You press <<D>>.
O: pincushion, D: avocado, and R: cookie cutter. You press <<R>>.
O: leg, D: book, and R: brass knuckles. You press <<D>>.
O: candy cane, D: combination lock, and R: stained glass. You press <<D>>.
O: pony, D: barrel, and R: brussels sprouts. You press <<O>>.
O: baton, D: tadpole, and R: honeycomb. You press <<R>>.