Perceived magnitude of visual displays

Area, numerosity, and mean size

Hunjae Lee, Jongsoo Baek, Sang Chul Chong

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Previous studies have shown that the visual system is able to estimate properties such as area, numerosity, and mean size efficiently and accurately. In the current study, we investigated whether our percepts of each of them could be based on ratios of the other two of these three properties. In each trial, observers viewed a display containing various quantities of filled circles and judged whether the magnitude of a property of the display, such as summed area, numerosity, or average size of the circles, was greater or less than a corresponding probe display. We found that mean size judgments were more accurate and precise compared to the other judgments. We then predicted observers' performances for each task using the measured performance for the other judgments. The results showed that the other properties predicted perceived summed area, but not perceived mean size and numerosity. Together, our results suggest that the visual system does not use ratios to compute mean size and numerosity.

Original languageEnglish
Article number12
JournalJournal of Vision
Volume16
Issue number3
DOIs
Publication statusPublished - 2016 Jan 1

Fingerprint

Task Performance and Analysis

All Science Journal Classification (ASJC) codes

  • Ophthalmology
  • Sensory Systems

Cite this

@article{88b721997ea74493badc503803003293,
title = "Perceived magnitude of visual displays: Area, numerosity, and mean size",
abstract = "Previous studies have shown that the visual system is able to estimate properties such as area, numerosity, and mean size efficiently and accurately. In the current study, we investigated whether our percepts of each of them could be based on ratios of the other two of these three properties. In each trial, observers viewed a display containing various quantities of filled circles and judged whether the magnitude of a property of the display, such as summed area, numerosity, or average size of the circles, was greater or less than a corresponding probe display. We found that mean size judgments were more accurate and precise compared to the other judgments. We then predicted observers' performances for each task using the measured performance for the other judgments. The results showed that the other properties predicted perceived summed area, but not perceived mean size and numerosity. Together, our results suggest that the visual system does not use ratios to compute mean size and numerosity.",
author = "Hunjae Lee and Jongsoo Baek and Chong, {Sang Chul}",
year = "2016",
month = "1",
day = "1",
doi = "10.1167/16.3.12",
language = "English",
volume = "16",
journal = "Journal of Vision",
issn = "1534-7362",
publisher = "Association for Research in Vision and Ophthalmology Inc.",
number = "3",

}

Perceived magnitude of visual displays : Area, numerosity, and mean size. / Lee, Hunjae; Baek, Jongsoo; Chong, Sang Chul.

In: Journal of Vision, Vol. 16, No. 3, 12, 01.01.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Perceived magnitude of visual displays

T2 - Area, numerosity, and mean size

AU - Lee, Hunjae

AU - Baek, Jongsoo

AU - Chong, Sang Chul

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Previous studies have shown that the visual system is able to estimate properties such as area, numerosity, and mean size efficiently and accurately. In the current study, we investigated whether our percepts of each of them could be based on ratios of the other two of these three properties. In each trial, observers viewed a display containing various quantities of filled circles and judged whether the magnitude of a property of the display, such as summed area, numerosity, or average size of the circles, was greater or less than a corresponding probe display. We found that mean size judgments were more accurate and precise compared to the other judgments. We then predicted observers' performances for each task using the measured performance for the other judgments. The results showed that the other properties predicted perceived summed area, but not perceived mean size and numerosity. Together, our results suggest that the visual system does not use ratios to compute mean size and numerosity.

AB - Previous studies have shown that the visual system is able to estimate properties such as area, numerosity, and mean size efficiently and accurately. In the current study, we investigated whether our percepts of each of them could be based on ratios of the other two of these three properties. In each trial, observers viewed a display containing various quantities of filled circles and judged whether the magnitude of a property of the display, such as summed area, numerosity, or average size of the circles, was greater or less than a corresponding probe display. We found that mean size judgments were more accurate and precise compared to the other judgments. We then predicted observers' performances for each task using the measured performance for the other judgments. The results showed that the other properties predicted perceived summed area, but not perceived mean size and numerosity. Together, our results suggest that the visual system does not use ratios to compute mean size and numerosity.

UR - http://www.scopus.com/inward/record.url?scp=84975706971&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84975706971&partnerID=8YFLogxK

U2 - 10.1167/16.3.12

DO - 10.1167/16.3.12

M3 - Article

VL - 16

JO - Journal of Vision

JF - Journal of Vision

SN - 1534-7362

IS - 3

M1 - 12

ER -