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

Numerical Calculations01:24

Numerical Calculations

1.3K
In engineering applications, the representation of the numerical value is critical. Presenting or reporting the answer is one of the essential parts of engineering practices. Numerical calculations are performed using handheld calculators or computers since numerically accurate answers are always preferred.
The solution to a problem is obtained using different methods. While manually solving algebraic symbols is one of the most common methods, the graphical method is often preferred. Computers...
1.3K
Significant Figures in Calculations00:58

Significant Figures in Calculations

16.9K
Uncertainty in measurements can be avoided by reporting the results of a calculation with the correct number of significant figures. This can be determined by the following rules for rounding numbers:
16.9K
Rules for Significant Figures01:44

Rules for Significant Figures

35.3K
In any measurement, the precision of the measuring tool is an essential factor. An ordinary ruler, for example, can measure length to the closest millimeter; a caliper, on the other hand, can measure length to the nearest 0.01 mm. As a result, the caliper is a more precise measurement tool because it can measure extremely minute changes in length. The measurements will be more accurate if the measuring tool is more precise.
It should be emphasized that when we represent measured values, the...
35.3K
Uncertainty in Measurement: Significant Figures03:34

Uncertainty in Measurement: Significant Figures

57.9K
All the digits in a measurement, including the uncertain last digit, are called significant figures or significant digits. Note that zero may be a measured value; for example, if a scale that shows weight to the nearest pound reads “140,” then the 1 (hundreds), 4 (tens), and 0 (ones) are all significant (measured) values.
57.9K
Uncertainty in Measurement: Reading Instruments02:46

Uncertainty in Measurement: Reading Instruments

37.6K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
37.6K
International System of Units01:29

International System of Units

4.6K
The International System of Units, known as the SI system, is a universally accepted measurement system recognized and used worldwide. The SI system is based on a set of three base units considered absolute, and their values do not change with location. These base units are meters, kilograms, and seconds.
Prefixes are used to define both larger and smaller quantities in the SI system. For example, milli, micro, and nano define smaller quantities, while kilo, mega, and giga are used to define...
4.6K

You might also read

Related Articles

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

Sort by
Same author

Correction: Practice makes better? The influence of increased practice on task conflict in the Stroop task.

Memory & cognition·2025
Same author

Practice makes better? The influence of increased practice on task conflict in the Stroop task.

Memory & cognition·2025
Same author

Walking to a number: is there affective involvement in generating the SNARC effect in numerical cognition?

Frontiers in psychology·2024
Same author

Absolute or relative size: What do we perceive when we look at a glass that is half full?

Journal of experimental psychology. Learning, memory, and cognition·2022
Same author

How can caching explain automaticity?

Psychonomic bulletin & review·2022
Same author

The approximate number system represents rational numbers: The special case of an empty set.

The Behavioral and brain sciences·2021

Related Experiment Video

Updated: May 2, 2026

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
08:56

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

2.5K

Decimals are not processed automatically, not even as being smaller than one.

Arava Y Kallai1, Joseph Tzelgov2

  • 1Department of Psychology, Ben-Gurion University of the Negev.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|February 20, 2014
PubMed
Summary

Decimals are not automatically processed or holistically represented in memory, unlike natural numbers. This study found that decimal processing relies on digit length rather than numerical value, indicating a lack of automatic activation.

More Related Videos

A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy
05:17

A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy

Published on: October 27, 2015

8.5K
Automated Quantification and Analysis of Cell Counting Procedures Using ImageJ Plugins
11:01

Automated Quantification and Analysis of Cell Counting Procedures Using ImageJ Plugins

Published on: November 17, 2016

48.3K

Related Experiment Videos

Last Updated: May 2, 2026

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
08:56

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

2.5K
A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy
05:17

A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy

Published on: October 27, 2015

8.5K
Automated Quantification and Analysis of Cell Counting Procedures Using ImageJ Plugins
11:01

Automated Quantification and Analysis of Cell Counting Procedures Using ImageJ Plugins

Published on: November 17, 2016

48.3K

Area of Science:

  • Cognitive Psychology
  • Numerical Cognition
  • Mathematical Psychology

Background:

  • Common fractions are processed intentionally, not automatically, suggesting they are not holistically represented in long-term memory.
  • Decimals, due to their form, might be holistically represented by educated adults, unlike common fractions.

Purpose of the Study:

  • To investigate the automatic processing of decimals in college students.
  • To test the hypothesis that decimals are holistically represented in long-term memory.
  • To compare the automatic processing of decimals with that of natural numbers.

Main Methods:

  • Four experiments were conducted with college students.
  • Stimuli included familiar decimals (e.g., 0.3, 0.05) and natural numbers.
  • Tasks involved numerical and physical comparison, controlling for digit number and location using a place-value task.

Main Results:

  • Decimal processing was dominated by stimulus length, not numerical value.
  • Decimals were not processed automatically in numerical or physical comparison tasks, even when controlling for digit properties.
  • Natural numbers, under identical conditions, were processed automatically.
  • Mixed pairs of decimals and natural numbers did not show automatic perception of decimals as smaller than natural numbers.

Conclusions:

  • Decimals are not represented holistically in long-term memory.
  • Decimal place-values (tenths, hundredths) are not sufficiently represented for automatic activation.
  • Unlike common fractions, decimals are not automatically perceived as smaller than natural numbers.