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

Global Climate Change01:50

Global Climate Change

29.0K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.0K
Reliability and Validity01:29

Reliability and Validity

14.1K
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
14.1K
pH Scale02:41

pH Scale

80.1K
Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
80.1K
Classifying Matter by Composition03:35

Classifying Matter by Composition

90.8K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. 
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated. 
A mixture is composed of two or...
90.8K
Data Validation01:15

Data Validation

2.1K
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
2.1K
Data Validation01:03

Data Validation

6.8K
Data validation is an essential part of a comprehensive assessment. Validation is confirming or verifying and opening the door to gathering more assessment data as it clarifies vague or unclear data. The process of checking and verifying the collected information is called data validation. The primary purpose of data validation is to ensure data is as free from error, bias, and misinterpretation as possible.
Nursing assessment guides are generally based on holistic models rather than medical...
6.8K

You might also read

Related Articles

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

Sort by
Same author

Establishing a Vocabulary for Skin Quality: Working Toward Consensus Skin Attribute Definitions From the Patient and Physician Perspective.

Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.]·2026
Same author

A Validated Assessment Scale for the Auriculocephalic Angle in Asians.

Aesthetic plastic surgery·2026
Same author

Hyperhidrosis: Prevalence, Diagnosis, and Stepwise Treatment.

Deutsches Arzteblatt international·2026
Same author

Inflammatory markers (IL-6 and CRP) in childhood and their association with brain structure and psychotic experiences in adulthood.

Brain, behavior, and immunity·2026
Same author

Survodutide for the Treatment of Obesity: Baseline Characteristics of the SYNCHRONIZE Cardiovascular Outcomes Trial.

JACC. Heart failure·2025
Same author

Millennium Pathways for Tractography: 40 grand challenges to shape the future of tractography.

ArXiv·2025

Related Experiment Video

Updated: Feb 8, 2026

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
10:39

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning

Published on: August 29, 2025

1.2K

Validated composite assessment scales for the global face.

Berthold Rzany1, Alastair Carruthers, Jean Carruthers

  • 1Division of Evidence Based Medicine, Klinik für Dermatologie, Charité-Universitätsmedizin Berlin, Campus Charit Mitte, Charitéplatz 1, Berlin, Germany. mail@rzany-berlin.de

Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [Et Al.]
|February 10, 2012
PubMed
Summary

Aesthetic grading scales for facial aging are reliable and valid tools. These scales accurately estimate patient age and aesthetic treatment needs, with lower face aging being particularly significant.

More Related Videos

Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions
08:31

Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions

Published on: December 1, 2020

5.6K
Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method
06:26

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Published on: October 6, 2017

8.8K

Related Experiment Videos

Last Updated: Feb 8, 2026

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
10:39

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning

Published on: August 29, 2025

1.2K
Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions
08:31

Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions

Published on: December 1, 2020

5.6K
Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method
06:26

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Published on: October 6, 2017

8.8K

Area of Science:

  • Aesthetics
  • Dermatology
  • Gerontology

Background:

  • Numerous grading scales exist for age-related facial changes.
  • The clinical validity and importance of combined facial aging assessment tools were previously unclear.

Purpose of the Study:

  • To assess the reliability and validity of a total face score and global scales.
  • To evaluate these scales for estimating patient age, aesthetic treatment effort, and facial aging signs.

Main Methods:

  • Descriptive, reliability, correlation, and principal component analyses were performed.
  • Fifty subjects were assessed by 12 raters using 20 grading scales and global face assessment scales.

Main Results:

  • High inter- and intrarater reliability was found for the total face score and scales measuring estimated age and aesthetic treatment effort.
  • These measures showed a strong correlation with actual patient age.
  • Lower facial areas were particularly indicative of aging.

Conclusions:

  • Aesthetic grading scales and global scales for age and treatment effort are reliable and valid.
  • Comprehensive facial evaluation aids in identifying key aging areas.
  • These tools can help define optimal aesthetic treatment strategies.