Accession Number:

ADA636944

Title:

Judgments of Proportion with Graphs: Object-Based Advantages

Descriptive Note:

Conference paper

Corporate Author:

DEFENCE RESEARCH AND DEVELOPMENT TORONTO (CANADA)

Personal Author(s):

Report Date:

2003-10-01

Pagination or Media Count:

4.0

Abstract:

This study investigated whether a stacked bar s vertical arrangement or single-object properties underlie its accuracy for proportion judgments. We hypothesized that observers would be less accurate when stacked bars were separated than when they formed a single object, according to the object-based theory of attention Duncan, 1984. Thirty participants judged proportions with three different graph types bars, stacked bars, and staggered stacked bars. Stacked bars produced smaller error than staggered stacked bars, while bars produced the greatest error. The results show an object-based advantage for stacked bars, but a vertical arrangement advantage for staggered stacked bars over bars was also evident.

Subject Categories:

  • Psychology
  • Printing and Graphic Arts

Distribution Statement:

APPROVED FOR PUBLIC RELEASE