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Experiment Author: Adapted from STEP (student submission to Research Methods class) and used with permission of Brian MacWhinney
Investigates whether horizontally or vertically presented addition problems are easier to solve, and whether "carrying" has an effect.
In this experiment two numbers appear on the screen. Add them together and type the answer using a keyboard. While typing, the number appears at the bottom of the screen. The backspace key may be used to erase the answer if it's typed incorrectly. Press the spacebar to move on to the next question. There are 48 trials in this experiment.
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