Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Gestalt Principles of Perception01:21

Gestalt Principles of Perception

Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
Area Computation by the Alternative Coordinate Method01:24

Area Computation by the Alternative Coordinate Method

The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
One-Way ANOVA: Equal Sample Sizes01:15

One-Way ANOVA: Equal Sample Sizes

One-Way ANOVA can be performed on three or more samples with equal or unequal sample sizes. When one-way ANOVA is performed on two datasets with samples of equal sizes, it can be easily observed that the computed F statistic is highly sensitive to the sample mean.
Different sample means can result in different values for the variance estimate: variance between samples. This is because the variance between samples is calculated as the product of the sample size and the variance between the...
Perceptual Constancy01:12

Perceptual Constancy

Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Peer assessment as a method for measuring harmful internet use.

MethodsX·2023
Same author

1,000,000 cases of COVID-19 outside of China: The date predicted by a simple heuristic.

Global epidemiology·2020
Same author

How to reduce the number of rating scale items without predictability loss?

Scientometrics·2017
Same author

Long-Term Modeling of Using Manually Coded and Autocoded Blood Glucose Meters in Diabetes Treatment.

Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research·2016
Same author

Cost-Effectiveness Analysis of Autocoded and Manually Coded Blood Glucose Meters In Diabetes Treatment.

Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research·2016
Same author

Determination of border irregularity in dermoscopic color images of pigmented skin lesions.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2016

Related Experiment Video

Updated: Jun 23, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

Pairwise comparisons and visual perceptions of equal area polygons.

P Adamic1, V Babiy, R Janicki

  • 1Laurentian University, Sudbury, Ontario, Canada.

Perceptual and Motor Skills
|May 12, 2009
PubMed
Summary
This summary is machine-generated.

Comparing shapes in pairs significantly improves visual area perception accuracy. This two-dimensional study shows a 20.24% gain, outperforming previous one-dimensional experiments.

More Related Videos

Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Related Experiment Videos

Last Updated: Jun 23, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Area of Science:

  • Cognitive Psychology
  • Visual Perception Research

Background:

  • Recent research has explored visual perception extensively.
  • Understanding how humans estimate areas is crucial in various fields.

Purpose of the Study:

  • To investigate the accuracy of area estimation for two-dimensional shapes.
  • To determine if pairwise comparisons enhance accuracy compared to using a unit reference.

Main Methods:

  • 179 university students from Canada and Poland participated.
  • Participants estimated the areas of five random shapes of equal area.
  • Area estimation was performed using a reference unit square and through pairwise comparisons.

Main Results:

  • The average error using a unit square was 25.75%.
  • Pairwise comparisons reduced the error to 5.51%, a 20.24% improvement.
  • This improvement significantly surpassed the 11.78% gain in prior one-dimensional studies.

Conclusions:

  • Pairwise comparison is a more accurate method for two-dimensional area estimation.
  • This study provides the first statistically sound evidence for improved accuracy in 2D area perception via pairwise comparison.