Before revision: Put simply, when presented with smaller numbers (0 to 4), people tend to respond faster if those stimuli are associated with the left peripersonal hemiside of their perceived surroundings; when presented with larger numbers (6 to 9), people respond faster if those stimuli are instead associated with the right peripersonal hemiside of their perceived surroundings.
After revision: Put simply, when presented with smaller numbers (0 to 4), people tend to respond faster if those stimuli are associated with the left extrapersonal hemiside of their perceived surroundings; when presented with larger numbers (6 to 9), people respond faster if those stimuli are instead associated with the right extrapersonal hemiside of their perceived surroundings.