The influence of the place-value structure of the Arabic number system on two-digit number processing - Representational, developmental, neuropsychological and computational aspects

........................................................................................................................... 43 INTRODUCTION .................................................................................................................. 44 How to observe unit-based null effects in two-digit number comparison ..................... 45 1. Use of small unit distances in the stimulus set ............................................................ 45 2. Use of no or only a few within-decade trials .............................................................. 46 3. Ignore congruity effects in magnitude comparison ..................................................... 46 Objectives ............................................................................................................................ 47 METHOD ................................................................................................................................ 48 Participants ......................................................................................................................... 48

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