摘要：The cognitive representation of negative numbers has recently been studied with
magni-tude classification and variable standard (Fischer, 2003b). Results
suggested that negative numbers are cognitively represented on a “mental number
line”. Conflicting with this obser-vation we report here that response biases
for parity classification of negative numbers are related to absolute digit
magnitude only. A control experiment with magnitude classification relative to a
fixed standard shows that our result does not reflect mere inattention to the
minus sign. Together, the available evidence suggests that we process negative
numbers less automatically compared to positive numbers.
关键词：mental number line, negative numbers, SNARC, MARC
