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

N: sailboat, X: trap, and I: headlamp. You press <<N>>.
N: chalkboard, X: wallet, and I: pear. You press <<X>>.
N: tractor, X: leek, and I: harness. You press <<N>>.
N: funnel, X: payphone, and I: uniform. You press <<X>>.
N: sheath, X: nutcracker, and I: magnifier. You press <<I>>.
N: ivy, X: jam, and I: moccasin. You press <<X>>.
N: ironing board, X: pumpkin, and I: moss. You press <<N>>.
N: lightbulb, X: bowtie, and I: racehorse. You press <<N>>.
N: scale, X: seed, and I: belt. You press <<I>>.
N: honey, X: stair, and I: cougar. You press <<I>>.
N: vise, X: radar, and I: stair. You press <<X>>.
N: nail polish, X: straw, and I: icemaker. You press <<X>>.
N: sailboat, X: compass, and I: flute. You press <<I>>.
N: tiger, X: slingshot, and I: pantyhose. You press <<X>>.
N: turbine, X: hearing aid, and I: ball. You press <<I>>.
N: wire cutters, X: hot-water bottle, and I: dough. You press <<N>>.
N: pipe, X: harp, and I: pedal. You press <<X>>.
N: pearl, X: cream cheese, and I: weed. You press <<I>>.
N: oatmeal, X: bowl, and I: gate. You press <<N>>.
N: basil, X: lightning bug, and I: lamppost. You press <<N>>.