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

X: dustpan, R: lemon, and C: ferris wheel. You press <<R>>.
X: stake, R: birdcage, and C: aardvark. You press <<C>>.
X: mongoose, R: hook, and C: copier. You press <<X>>.
X: mail, R: okra, and C: rosary. You press <<R>>.
X: fountain pen, R: granola, and C: tennis ball. You press <<R>>.
X: yo-yo, R: spoon, and C: crane. You press <<X>>.
X: dandelion, R: avocado, and C: seismograph. You press <<C>>.
X: toothpick, R: pendulum, and C: phone. You press <<C>>.
X: centrifuge, R: amber, and C: tortilla. You press <<X>>.
X: slime, R: keyboard, and C: bookmark. You press <<X>>.
X: spatula, R: gavel, and C: blowfish. You press <<C>>.
X: saltshaker, R: pet food, and C: eggplant. You press <<R>>.
X: revolving door, R: tackle, and C: bobsled. You press <<X>>.
X: hawk, R: gazelle, and C: dandelion. You press <<C>>.
X: baton, R: visor, and C: bottle opener. You press <<R>>.
X: mushroom, R: raspberry, and C: lantern. You press <<C>>.
X: hoodie, R: paper towel, and C: hanger. You press <<R>>.
X: chalkboard, R: desk, and C: film. You press <<C>>.
X: pincushion, R: net, and C: twig. You press <<X>>.
X: burrito, R: incubator, and C: screen. You press <<C>>.