You will be presented with triplets of objects, which will be assigned to the keys R, M, and K.
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: ink, M: acorn, and K: vise. You press <<M>>.
R: snake, M: backpack, and K: footbath. You press <<K>>.
R: penguin, M: guitar, and K: paper plate. You press <<M>>.
R: fast food, M: iguana, and K: pocket watch. You press <<M>>.
R: stretcher, M: screwdriver, and K: highchair. You press <<M>>.
R: clipboard, M: rope, and K: pump. You press <<R>>.
R: chessboard, M: block, and K: parfait. You press <<K>>.
R: ostrich, M: egg, and K: gorilla. You press <<K>>.
R: shopping cart, M: sand, and K: briefcase. You press <<M>>.
R: rim, M: teapot, and K: rake. You press <<K>>.
R: calf, M: burrito, and K: toothbrush. You press <<K>>.
R: eggplant, M: guinea pig, and K: scaffold. You press <<R>>.
R: trough, M: flask, and K: napkin. You press <<K>>.
R: pudding, M: garbage truck, and K: missile. You press <<R>>.
R: luggage, M: t-shirt, and K: garter. You press <<K>>.
R: flask, M: pepper, and K: tulip. You press <<R>>.
R: net, M: telephone pole, and K: floss. You press <<K>>.
R: woman, M: nail polish, and K: loom. You press <<K>>.
R: cockroach, M: potpourri, and K: card. You press <<K>>.
R: hammer, M: glass, and K: camera lens. You press <<K>>.