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Related Concept Videos

Scaling01:26

Scaling

In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
Orders of Magnitude01:15

Orders of Magnitude

The order of magnitude of a number is the power of 10 that most closely approximates it. Thus, the order of magnitude estimates the scale (or size) of its value. To find the order of magnitude of a number, take the base-10 logarithm of the number and round it to the nearest integer. Then the order of magnitude of the number is simply the resulting power of 10.
The order of magnitude is simply a way of rounding numbers consistently to the nearest power of 10. This makes doing rough mental math...
Introduction to Scalers01:21

Introduction to Scalers

Many familiar physical quantities can be specified completely by giving a single number and the appropriate unit. For example, "a class period lasts 50 min," or "the gas tank in my car holds 65 L," or "the distance between the two posts is 100 m." A physical quantity that can be specified completely in this manner is called a scalar quantity. The word "scalar" is a synonym for "number." Time, mass, distance, length, volume, temperature, and energy are some examples of scalar quantities.
Scalar...

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Related Experiment Video

Updated: Jun 4, 2026

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila
06:00

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila

Published on: October 1, 2011

Mental size scaling examined.

D Besner1, M Coltheart

  • 1Department of Psychology, University of Reading, Building 3, Earley Gate, Whiteknights, RG6 2AL, Reading, England.

Memory & Cognition
|February 3, 2011
PubMed
Summary
This summary is machine-generated.

Response times for "same" shape judgments increased with size differences, while "different" judgments remained unaffected. This suggests size influences same-shape comparisons but not different-shape detection.

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Related Experiment Videos

Last Updated: Jun 4, 2026

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Published on: February 19, 2018

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Human Factors

Background:

  • Understanding how humans process visual stimuli, particularly shape and size, is crucial for fields like human-computer interaction and design.
  • Previous research has explored factors influencing visual judgments, but the specific impact of relative size on same-different shape discrimination requires further elucidation.

Purpose of the Study:

  • To investigate the effect of relative size differences on the speed of same-different shape judgments.
  • To explore the underlying cognitive processes involved in visual comparison tasks, differentiating between same and different judgments.

Main Methods:

  • Participants performed same-different shape judgments on stimuli varying in shape and relative size.
  • Reaction times (RTs) were recorded for both simultaneous and successive stimulus presentations.
  • Stimuli were manipulated to include identical shapes, different shapes (same size), and different shapes with varying relative sizes.

Main Results:

  • "Same" judgment RTs increased monotonically with the magnitude of relative size differences.
  • "Different" judgment RTs were not significantly affected by changes in relative size.
  • Results were consistent across both simultaneous and successive stimulus presentation methods.

Conclusions:

  • Relative size appears to influence the processing of "same" shape judgments, potentially through a normalization process before comparison.
  • The lack of size effect on "different" judgments suggests distinct processing pathways for same versus different stimuli.
  • An alternative explanation involving early size difference detection altering decision criteria is proposed, warranting further investigation.