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

Nominal Level of Measurement00:56

Nominal Level of Measurement

The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. Not every statistical operation can be used with every set of data. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
The data that cannot be measured but can be grouped into categories fall under the nominal level of measurement. Data that is measured using a nominal scale is...
Uncertainty in Measurement: Reading Instruments02:46

Uncertainty in Measurement: Reading Instruments

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...
Measures of Central Tendency02:16

Measures of Central Tendency

The "center" of a data set is also a way of describing location. The two most widely used measures of the "center" of the data are the mean (average) and the median. The words "mean" and "average" are often used interchangeably. The substitution of one word for the other is common practice. The technical term is "arithmetic mean" and "average" is technically a center location. However, in practice among non-statisticians, "average" is commonly accepted for "arithmetic mean."
Metabolic States of the Body: Fasting and Starvation01:24

Metabolic States of the Body: Fasting and Starvation

During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
Binge Eating Disorders01:23

Binge Eating Disorders

Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

You might also read

Related Articles

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

Sort by
Same author

Strategies for achieving healthy, sustainable, and equitable dietary transitions.

Science (New York, N.Y.)·2026
Same author

Author Correction: Agrifood value chain employment and compensation shift with structural transformation.

Nature food·2026
Same author

Second best underestimates of malnutrition in an era of multiplying food crises.

Nature food·2025
Same author

US investment in African food systems will have global benefits.

Nature·2025
Same author

Climate rather than overgrazing explains most rangeland primary productivity change in Mongolia.

Science (New York, N.Y.)·2025
Same author

Agrifood value chain employment and compensation shift with structural transformation.

Nature food·2025
Same journal

A native sulfur deposit in Gale crater, Mars.

Science (New York, N.Y.)·2026
Same journal

Coordinated demise of harmful algal blooms.

Science (New York, N.Y.)·2026
Same journal

Genetic effects put into context.

Science (New York, N.Y.)·2026
Same journal

Bacteria share proteins to survive antibiotics.

Science (New York, N.Y.)·2026
Same journal

Impacts shaped Earth's first continents.

Science (New York, N.Y.)·2026
Same journal

Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.

Science (New York, N.Y.)·2026
See all related articles

Related Experiment Video

Updated: Jun 16, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Measuring food insecurity.

Christopher B Barrett1

  • 1Department of Applied Economics and Management, Warren Hall, Cornell University, Ithaca, NY 14853-7801, USA. cbb2@cornell.edu

Science (New York, N.Y.)
|February 13, 2010
PubMed
Summary
This summary is machine-generated.

Global food security is a major issue, with over a billion people lacking adequate energy and twice that number facing micronutrient deficiencies. Improving measurement is key to understanding and addressing these widespread challenges.

Related Experiment Videos

Last Updated: Jun 16, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Area of Science:

  • Global Health
  • Nutrition Science
  • Agricultural Economics

Background:

  • Food security is a critical global challenge, impacting over a billion people with insufficient dietary energy.
  • Micronutrient deficiencies affect at least two billion individuals worldwide, highlighting a dual burden of malnutrition.
  • Accurate measurement of food insecurity is essential for effective policy and intervention, yet remains a significant research challenge.

Purpose of the Study:

  • To review current research on improving food insecurity measurement.
  • To highlight the difficulties in accurately assessing the prevalence and patterns of food insecurity.
  • To underscore the importance of reliable indicators for informing action.

Main Methods:

  • Literature review of current research on food insecurity measurement.
  • Analysis of existing data on global food security and micronutrient deficiencies.
  • Discussion of conceptual and practical challenges in measuring food security.

Main Results:

  • Prevalence rates and patterns of food insecurity remain uncertain due to measurement difficulties.
  • Existing indicators provide a tenuous understanding of the true scope of the problem.
  • The elusive nature of food security complicates accurate assessment.

Conclusions:

  • Improving the measurement of food security is crucial for global health and nutrition.
  • Enhanced measurement tools are needed to guide effective interventions.
  • Further research is vital to overcome the challenges in assessing food security accurately.