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

Dimensional Analysis01:27

Dimensional Analysis

495
Dimensional analysis is a valuable technique in fluid mechanics for simplifying complex problems by reducing them into dimensionless groups. These groups capture the essential relationships between the variables involved, allowing researchers and engineers to analyze fluid flow without dealing with each variable individually. This approach reduces the number of independent variables, allowing for easier analysis and better understanding of physical phenomena.
In fluid mechanics, dimensional...
495
Dimensional Analysis01:23

Dimensional Analysis

1.7K
Dimensional analysis is a powerful tool that is used in physics and engineering to understand and predict the behavior of physical systems. The basic idea behind dimensional analysis is to express physical quantities in terms of fundamental dimensions such as the mass, length, and time. Derived dimensions like the velocity, acceleration, and force are derived from the combinations of these fundamental dimensions.
Dimensional analysis allows us to analyze and compare physical quantities on a...
1.7K
Dimensional Analysis02:19

Dimensional Analysis

21.2K
The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that mathematical equations must meet the following two rules. The first rule is that, in an equation, the expressions on each side of the equal sign must have the same dimensions. This is fairly intuitive since we can only add or subtract quantities of the same type (dimension). The second rule states that, in an equation, the arguments of any of the...
21.2K
Dimensional Analysis03:40

Dimensional Analysis

57.8K
Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
57.8K
Problem Solving: Dimensional Analysis01:08

Problem Solving: Dimensional Analysis

5.5K
Every mathematical equation that connects separate distinct physical quantities must be dimensionally consistent, which implies it must abide by two rules. For this reason, the concept of dimension is crucial. The first rule is that an equation's expressions on either side of an equality must have the exact same dimension, i.e., quantities of the same dimension can be added or removed. The second rule stipulates that all popular mathematical functions, such as exponential, logarithmic, and...
5.5K
Correlation of Experimental Data01:23

Correlation of Experimental Data

387
Dimensional analysis simplifies complex physical problems and guides experimental investigations, but it does not provide complete solutions. It identifies the dimensionless groups that influence a phenomenon, but experimental data is needed to establish the specific relationships and validate theoretical predictions.
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
387

You might also read

Related Articles

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

Sort by
Same author

Tonal modulation influences on musical sight-reading.

Frontiers in psychology·2026
Same author

Momentary clumsiness and attention: Everyday interactions (and risks) in the world.

Acta psychologica·2025
Same author

Infants' Social Evaluation of Helpers and Hinderers: A Large-Scale, Multi-Lab, Coordinated Replication Study.

Developmental science·2024
Same author

What we don't know about what babies know: Reconsidering psychophysics, exploration, and infant behavior.

The Behavioral and brain sciences·2024
Same author

Multisensory and biomechanical influences on postural control in children.

Journal of experimental child psychology·2023
Same author

Motor constraints on infant search: The impact of reaching around a barrier on search performance.

Journal of experimental child psychology·2023
Same journal

Early and Chronic Postnatal Depression, Maternal Sensitivity to Non-Distress and Infant Neurodevelopmental Outcomes in an Indian Birth Cohort.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Infants Anticipate the Timing of Sounds From Dynamic Collision Events.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Dips in Development: Learning to Walk Temporarily Disrupts Infant Vocalization.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Infants' Multimodal Requests and Protests Elicit Responses From Mothers During Everyday Home Activities.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Melody and Lyrics Are Integrated by Late Infancy During Recognition of Music Learned at Home.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Joint Attention in Late Preterm Infants: Developmental Trajectory and Contribution of Maternal Interaction.

Infancy : the official journal of the International Society on Infant Studies·2026
See all related articles

Related Experiment Video

Updated: Nov 21, 2025

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

2.8K

What Is Ecological Validity? A Dimensional Analysis.

Mark A Schmuckler1

  • 1Division of Life Sciences University of Toronto at Scarborough.

Infancy : the Official Journal of the International Society on Infant Studies
|January 16, 2021
PubMed
Summary
This summary is machine-generated.

Ecological validity examines generalizing lab behavior to the real world. This study explores its historical roots and multidimensional aspects, highlighting a lack of clear evaluation criteria for research.

More Related Videos

An Operant Intra-/Extra-dimensional Set-shift Task for Mice
08:35

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

Published on: January 22, 2016

12.5K
Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education
09:00

Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education

Published on: August 16, 2024

1.0K

Related Experiment Videos

Last Updated: Nov 21, 2025

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

2.8K
An Operant Intra-/Extra-dimensional Set-shift Task for Mice
08:35

An Operant Intra-/Extra-dimensional Set-shift Task for Mice

Published on: January 22, 2016

12.5K
Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education
09:00

Author Spotlight: Validation of SICOLE-R for Assessing Cognitive and Reading Skills in Spanish-Speaking Children and Its Role in Personalized Education

Published on: August 16, 2024

1.0K

Area of Science:

  • Psychology
  • Research Methodology

Background:

  • Ecological validity traditionally assesses the generalizability of laboratory findings to real-world behaviors.
  • The concept has a long history in psychological research, influencing experimental design.
  • Concerns about ecological validity span experimental settings, stimuli, and measurement responses.

Purpose of the Study:

  • To historically examine the concept of ecological validity in psychological research.
  • To identify and discuss the multidimensional aspects of ecological validity.
  • To critically evaluate research on mobility development in light of ecological validity constraints.

Main Methods:

  • Historical analysis of the concept of ecological validity.
  • Examination of the dimensions influencing ecological validity in experimental work.
  • Critical review of mobility development research against ecological validity criteria.

Main Results:

  • Ecological validity concerns are present across various experimental dimensions.
  • A lack of explicit criteria hinders the consistent application of ecological validity evaluations.
  • The multidimensionality of ecological validity can lead to its applicability in most experimental contexts.

Conclusions:

  • Understanding the historical and multidimensional nature of ecological validity is crucial for robust research.
  • Developing clear criteria for assessing ecological validity is necessary for its effective application.
  • Research, such as that on mobility development, must consider ecological validity to ensure real-world relevance.