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

Z: spur, R: file, and W: book. You press <<Z>>.
Z: mold, R: toaster, and W: centrifuge. You press <<Z>>.
Z: stapler, R: beaver, and W: paperweight. You press <<R>>.
Z: wire cutters, R: plum, and W: blueberry. You press <<Z>>.
Z: robot, R: mole, and W: confetti. You press <<W>>.
Z: pedal, R: shoe polish, and W: trigger. You press <<Z>>.
Z: bun, R: playpen, and W: cage. You press <<Z>>.
Z: comb, R: crate, and W: mat. You press <<Z>>.
Z: paperweight, R: backscratcher, and W: mud. You press <<R>>.
Z: flour, R: poker, and W: dalmatian. You press <<R>>.
Z: wind chimes, R: mousse, and W: sidecar. You press <<R>>.
Z: porthole, R: radar, and W: fudge. You press <<W>>.
Z: cassette, R: mongoose, and W: dart. You press <<R>>.
Z: cardboard, R: tee, and W: cord. You press <<R>>.
Z: flashlight, R: bow, and W: projector. You press <<R>>.
Z: clover, R: seaweed, and W: target. You press <<W>>.
Z: screen, R: charcoal, and W: breakfast. You press <<Z>>.
Z: tugboat, R: ravioli, and W: toast. You press <<Z>>.
Z: banjo, R: bell, and W: clipper. You press <<W>>.
Z: dumpster, R: turnstile, and W: coffee table. You press <<W>>.
Z: chalice, R: gumdrop, and W: amplifier. You press <<R>>.
Z: bedpost, R: pillbox, and W: thread. You press <<Z>>.
Z: oatmeal, R: rack, and W: ashtray. You press <<R>>.
Z: ice pack, R: fruit, and W: chessboard. You press <<Z>>.
Z: vest, R: nose, and W: flashbulb. You press <<W>>.
Z: mulch, R: computer screen, and W: hotdog. You press <<R>>.
Z: bolo tie, R: timer, and W: cardigan. You press <<R>>.
Z: hanger, R: beanbag, and W: granola. You press <<R>>.
Z: guinea pig, R: bongo, and W: trolley. You press <<W>>.
Z: pacifier, R: roll, and W: photograph. You press <<R>>.
Z: licorice, R: crane, and W: pot. You press <<Z>>.
Z: duckling, R: chili, and W: cruise ship. You press <<R>>.
Z: polaroid, R: cabinet, and W: turnstile. You press <<Z>>.
Z: ski, R: headscarf, and W: wing. You press <<R>>.
Z: cummerbund, R: bed, and W: headscarf. You press <<R>>.
Z: blimp, R: fingerprint, and W: missile. You press <<R>>.
Z: finger, R: chicken wire, and W: cement mixer. You press <<Z>>.
Z: hanger, R: hovercraft, and W: microwave. You press <<Z>>.
Z: knob, R: ladybug, and W: chips. You press <<W>>.
Z: vegetable, R: knee, and W: sauerkraut. You press <<R>>.