You will be presented with triplets of objects, which will be assigned to the keys D, Z, and H.
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: touchpad, Z: headlight, and H: spark plug. You press <<D>>.
D: saucer, Z: rice, and H: staple. You press <<H>>.
D: airbag, Z: cheesecake, and H: moss. You press <<H>>.
D: rice, Z: diving board, and H: brownie. You press <<Z>>.
D: nutcracker, Z: macadamia, and H: alligator. You press <<D>>.
D: triangle, Z: blackberry, and H: microphone. You press <<Z>>.
D: fossil, Z: bread, and H: fountain pen. You press <<Z>>.
D: tie, Z: hat, and H: printer. You press <<H>>.
D: axe, Z: wetsuit, and H: cobra. You press <<H>>.
D: face, Z: statue, and H: timer. You press <<H>>.
D: alpaca, Z: wheelbarrow, and H: shoehorn. You press <<D>>.
D: spacesuit, Z: mosquito net, and H: mousetrap. You press <<H>>.
D: eyedropper, Z: water fountain, and H: boa. You press <<H>>.
D: eclair, Z: cufflink, and H: tractor. You press <<H>>.
D: tree trunk, Z: tupperware, and H: peacock. You press <<Z>>.
D: cookie sheet, Z: garbage truck, and H: workbench. You press <<Z>>.
D: cheeseburger, Z: gun, and H: razor. You press <<D>>.
D: test tube, Z: steering wheel, and H: bank. You press <<Z>>.
D: ice pack, Z: ferret, and H: seesaw. You press <<Z>>.
D: sail, Z: parfait, and H: pillbox. You press <<D>>.