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

Biological Influences on Intelligence01:30

Biological Influences on Intelligence

613
Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter...
613
Intelligence01:27

Intelligence

8.8K
The term "intelligence" is complex because it refers to both behavior and individuals, and its interpretation varies across cultures. European Americans tend to link intelligence with reasoning and cognitive skills, while in Kenya, it is tied to responsible participation in family and social life. In Uganda, intelligence is seen as the ability to know the right actions and carry them out effectively, while the Iatmul people of Papua New Guinea associate it with the capacity to remember...
8.8K
Environmental Influences on Intelligence01:29

Environmental Influences on Intelligence

1.0K
Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children...
1.0K
Measures of Intelligence01:29

Measures of Intelligence

8.6K
Psychologists measure intelligence by using standardized tests that produce a score known as the intelligence quotient or IQ. To understand IQ tests, it's important to recognize the key principles behind their construction: validity, reliability, and standardization.
Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this;...
8.6K

You might also read

Related Articles

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

Sort by
Same author

Association of Self-esteem with Mental Health and Personality: The Contribution of Genetic and Environmental Factors.

Behavior genetics·2026
Same author

Overlapping genetic influences between creativity and borderline personality symptoms in a large Dutch sample.

Scientific reports·2024
Same author

Unpredictable Mixed-Valence Outcomes Induce a Chronic and Reversible Generalized Anxiety-like Phenotype in Male Mice.

Biological psychiatry global open science·2024
Same author

Long-term impact of digital media on brain development in children.

Scientific reports·2024
Same author

A Chronic Increase in Blood-Brain Barrier Permeability Facilitates Intraneuronal Deposition of Exogenous Bloodborne Amyloid-Beta1-42 Peptide in the Brain and Leads to Alzheimer's Disease-Relevant Cognitive Changes in a Mouse Model.

Journal of Alzheimer's disease : JAD·2024
Same author

Negative attributes of mixed-valence memories strengthen over long retention intervals and the degree of enhancement is predicted by individual differences in state anxiety.

Behavioral neuroscience·2023

Related Experiment Video

Updated: Feb 21, 2026

Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems
08:42

Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems

Published on: May 5, 2015

12.7K

Individual differences: Case studies of rodent and primate intelligence.

Louis D Matzel1, Bruno Sauce1

  • 1Department of Psychology, Program in Behavioral and Systems Neuroscience, Rutgers University.

Journal of Experimental Psychology. Animal Learning and Cognition
|October 6, 2017
PubMed
Summary

Individual differences in general intelligence (g) exist across species, including primates and rodents. Understanding these variations is crucial for learning, cognition, behavior, and therapeutic strategies.

More Related Videos

A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains
07:14

A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains

Published on: January 16, 2026

182
A Fully Automated Rodent Conditioning Protocol for Sensorimotor Integration and Cognitive Control Experiments
09:43

A Fully Automated Rodent Conditioning Protocol for Sensorimotor Integration and Cognitive Control Experiments

Published on: April 15, 2014

11.1K

Related Experiment Videos

Last Updated: Feb 21, 2026

Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems
08:42

Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems

Published on: May 5, 2015

12.7K
A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains
07:14

A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains

Published on: January 16, 2026

182
A Fully Automated Rodent Conditioning Protocol for Sensorimotor Integration and Cognitive Control Experiments
09:43

A Fully Automated Rodent Conditioning Protocol for Sensorimotor Integration and Cognitive Control Experiments

Published on: April 15, 2014

11.1K

Area of Science:

  • Psychology
  • Cognitive Science
  • Behavioral Genetics

Background:

  • Individual differences were central to early 20th-century psychology but declined in focus by century's end.
  • Contemporary psychological theory has largely overlooked the role of individual differences.
  • Variations in general intelligence (g) provide a compelling example of the significance of individual differences.

Purpose of the Study:

  • To illustrate the critical role of individual differences in psychological research.
  • To demonstrate the presence and significance of general intelligence (g) across different species.
  • To highlight the importance of studying individual differences for understanding cognition and behavior.

Main Methods:

  • Reviewing evidence for general intelligence (g) in primates and rodents.
  • Describing the processes contributing to variations in general intelligence.
  • Outlining methods for analyzing individual differences.

Main Results:

  • General intelligence (g) is present in at least two genera: primates and rodents.
  • Significant individual variations in general intelligence exist within species.
  • These variations result from gene-environment interactions and have functional consequences.

Conclusions:

  • Studying individual differences is essential for advancing our understanding of learning, cognition, and behavior.
  • Attention to individual differences can improve the administration of therapeutic strategies for psychological disorders.
  • Individual differences in general intelligence have profound implications for psychological theory and practice.