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Related Concept Videos

Coulomb's Law01:30

Coulomb's Law

Experiments with electric charges have shown that if two objects each have an electric charge, they exert an electric force on each other. The magnitude of the force is linearly proportional to the net charge on each object and inversely proportional to the square of the distance between them. The direction of the force vector is along the imaginary line joining the two objects and is dictated by the signs of the charges involved.
Newton's third law applies to the Coulomb force — the force on...
Chemical Shift: Internal References and Solvent Effects01:17

Chemical Shift: Internal References and Solvent Effects

In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
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Inertial Frames of Reference01:03

Inertial Frames of Reference

Newton’s first law is usually considered to be a statement about reference frames. It provides a method for identifying a special type of reference frame: the inertial reference frame. In principle, we can make the net force on a body zero. If its velocity relative to a given frame is constant, then that frame is said to be inertial. So, by definition, an inertial reference frame is a reference frame where Newton's first law holds valid. Newton's first law applies to objects with constant...
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

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Non-inertial Frames of Reference01:27

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Related Experiment Video

Updated: Jun 28, 2026

Creating and Applying a Reference to Facilitate the Discussion and Classification of Proteins in a Diverse Group
07:49

Creating and Applying a Reference to Facilitate the Discussion and Classification of Proteins in a Diverse Group

Published on: August 16, 2017

What is the reference in reference repulsion?

Mark Wiese1, Peter Wenderoth

  • 1Department of Psychology, Macquarie University, Sydney, New South Wales 2109, Australia. mwiese@vision.psy.mq.edu.au

Perception
|November 7, 2008
PubMed
Summary

This study challenges the reference repulsion mechanism in visual perception. Replicating previous experiments found no systematic direction judgment biases, questioning the validity of this perceptual model.

Area of Science:

  • Visual Perception
  • Human Psychology
  • Cognitive Science

Background:

  • Reference repulsion was proposed to explain biases in judging the direction of drifting dot displays.
  • Previous studies reported differing effects based on stimulus presentation (simultaneous vs. successive).

Purpose of the Study:

  • To test the validity and predictability of the reference repulsion mechanism.
  • To replicate experiments by Rauber and Treue (1998) on direction judgment biases.

Main Methods:

  • Attempted replication of Rauber and Treue's experiments on direction judgment.
  • Analysis of existing literature comparing results across multiple studies.

Main Results:

  • No systematic biases in direction judgment were observed during replication attempts.

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In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy

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Last Updated: Jun 28, 2026

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  • Existing studies show wide variations in direction judgment errors, inconsistent with a defined mechanism.
  • The proposed reference repulsion mechanism lacks testable predictions as the reference point is defined post-hoc.
  • Conclusions:

    • The reference repulsion mechanism is not supported by empirical evidence.
    • Systematic biases in direction judgment are not consistently observed, suggesting no real perceptual mechanism.
    • Direction misjudgments in visual displays appear variable and unpredictable.