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

D: scrabble, X: radio, and O: seahorse. You press <<O>>.
D: flashbulb, X: shutter, and O: spareribs. You press <<O>>.
D: yacht, X: tree trunk, and O: videogame. You press <<O>>.
D: mold, X: cheese, and O: leek. You press <<O>>.
D: honey, X: beachball, and O: egg. You press <<X>>.
D: cooker, X: cream, and O: bun. You press <<O>>.
D: taxi, X: closet, and O: mat. You press <<D>>.
D: belt buckle, X: gun, and O: poker. You press <<D>>.
D: eel, X: cocoon, and O: tripod. You press <<O>>.
D: bedpost, X: dollhouse, and O: slide. You press <<O>>.
D: bead, X: rollerskate, and O: drum. You press <<D>>.
D: jukebox, X: stilt, and O: honey. You press <<O>>.
D: dalmatian, X: crepe, and O: incense. You press <<D>>.
D: luggage, X: paper plate, and O: hippopotamus. You press <<O>>.
D: twig, X: octopus, and O: space shuttle. You press <<O>>.
D: kimono, X: outlet, and O: taxi. You press <<O>>.
D: air pump, X: bee, and O: lock. You press <<X>>.
D: train car, X: boy, and O: crane. You press <<X>>.
D: stilt, X: wire cutters, and O: parking meter. You press <<O>>.
D: centrifuge, X: shower cap, and O: grill. You press <<X>>.