Place the discounted price on the left to make it feel smaller
Where you place a price on a proposal page changes how cheap it feels. Research on the SNARC effect shows that human brains mentally map numbers from left to right, associating the left side with smaller magnitudes. When you place a discounted price to the left of the original price rather than the right, buyers process the lower number faster and perceive the cost as significantly smaller, reducing purchase friction.
The Mental Geometry of Numbers
In formal mathematics, a number is an abstract concept defined by its magnitude, order, and relations to other values. Inside the human nervous system, however, numbers rarely remain entirely abstract. Instead, the brain translates numerical magnitude into physical and spatial representations. When people contemplate numbers, they routinely map them along an internal mental space, anchoring quantities to directional coordinates. This phenomenon means that how a person evaluates a value depends not only on the numeral itself, but also on where that numeral appears in their physical environment.
The cognitive bridge connecting spatial coordinates to numerical magnitude is known as the Spatial-Numerical Association of Response Codes, or the SNARC effect. First documented systematically by cognitive neuroscientist Stanislas Dehaene and his colleagues in the early 1990s, the SNARC effect demonstrates an automatic link between magnitude and spatial direction. In classic experiments, participants were asked to perform a parity judgment task, determining simply whether an isolated digit was odd or even. Although the numerical size of the digit was entirely irrelevant to whether it was odd or even, participants consistently responded faster with their left hand when the digit was small and faster with their right hand when the digit was large.
This experimental pattern revealed that the human mind does not compartmentalize numerical decisions away from spatial actions. Even when someone attempts to ignore the size of a number to focus on a completely different attribute, the brain automatically extracts its magnitude and activates a corresponding spatial location. Small values instinctively recruit left-sided spatial processing, while larger values recruit the right side, creating an internal continuum that influences subsequent perception and action.