Extended Data Table 1 Observed rates of subtractive changes, additive changes and other changes in studies S1 to S8

From: People systematically overlook subtractive changes

  1. Subtractive changes are those that have fewer components than the original; additive changes are those that have more components than the original; the ‘other’ category refers to all responses that could not be categorized as subtractive or additive. The unit of analysis in study S2 is ideas rather than people. Numbers in parentheses represent the count of participants who subtracted (as the numerator) divided by the total number of participants in the condition (denominator). The ‘substraction %’ column excludes ‘other’ responses; it represents the percentage of subtractive changes out of all additive and subtractive changes, and provides the basis for a test against 50%. For all studies, values in the ‘subtraction %’ column differ significantly from the 50% that would be expected if the two transformations were equally common (two-sided binomial distribution probability, P < 0.001). Procedural and analysis details are available in the Supplementary Information sections 2.1–2.8.
Back to article page