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

E: tugboat, Z: kiwi, and W: thermos. You press <<E>>.
E: sheet, Z: letter opener, and W: catfish. You press <<E>>.
E: tape recorder, Z: garlic, and W: chinchilla. You press <<Z>>.
E: ski lift, Z: scallop, and W: washing machine. You press <<Z>>.
E: poster, Z: piglet, and W: cash machine. You press <<Z>>.
E: bikini, Z: revolver, and W: cup. You press <<Z>>.
E: saffron, Z: carriage, and W: vulture. You press <<Z>>.
E: crystal ball, Z: tumbleweed, and W: dashboard. You press <<Z>>.
E: ferret, Z: cow, and W: gorilla. You press <<W>>.
E: record, Z: bongo, and W: syrup. You press <<W>>.
E: cake, Z: match, and W: denture. You press <<W>>.
E: ear, Z: diving board, and W: teepee. You press <<E>>.
E: cleaver, Z: scuba, and W: face mask. You press <<E>>.
E: deodorant, Z: rollerblade, and W: flower. You press <<W>>.
E: kangaroo, Z: slot, and W: muff. You press <<Z>>.
E: kite, Z: sorbet, and W: shawl. You press <<Z>>.
E: cape, Z: diskette, and W: pretzel. You press <<W>>.
E: donut, Z: vent, and W: ambulance. You press <<E>>.
E: highlighter, Z: trident, and W: blower. You press <<W>>.
E: footrest, Z: sheet, and W: crayon. You press <<E>>.