Unlike previous research on the neural consequences of buying, we controlled for numeracy ability. Theoretically, High MA can be concurrent with and reciprocally interconnected to numeracy deficits (Hembree, 1990). Highly numerate individuals have been shown as less susceptible to numerical biases and to have better calibrated affect expectancies when making numerical judgments (Peters et al., 2006). To test boundary conditions of buying effects under demanding cognitive conditions, we further included a condition with percentage price promotions (e.g., 15% off), a widely used marketing tactic.