Related Experiment Video
Updated: Jan 23, 2026
06:37
Author Spotlight: Addressing Technical and Subjective Challenges in Measuring Classroom Attention
Published on: December 15, 2023
5.3K
A Differential-Developmental Model (DDM): Mental Speed, Attention Lapses, and General Intelligence (g)
1Department of Psychology, University of Texas at San Antonio, San Antonio, TX 78249, USA. thomas.coyle@utsa.edu.
Journal of Intelligence
|June 5, 2019
Summary
This study introduces a Differential-Developmental Model (DDM) to explain intelligence differences. It uses a chronometric device to measure mental speed components, linking them to cognitive development and intelligence (g).
Area of Science:
- Cognitive Psychology
- Developmental Psychology
- Psychometrics
Background:
- Intelligence (g) and cognitive development show individual and developmental differences.
- Understanding the underlying factors driving these differences is crucial.
Purpose of the Study:
- To present a parsimonious Differential-Developmental Model (DDM) for intelligence.
- To identify common factors in intelligence and cognitive development, such as mental speed and attention lapses.
- To introduce a novel chronometric method for measuring mental speed components.
Main Methods:
- Development of the Differential-Developmental Model (DDM).
- Utilization of Jensen's box, a chronometric device, to systematically vary task complexity.
- Separation of reaction time and movement time to assess their differential predictive power.
Main Results:
- Preliminary findings support the DDM's assumptions.
- Identified distinct components of mental speed that differentially predict intelligence (g) and cognitive development.
- Demonstrated the utility of the chronometric device in separating these components.
Conclusions:
- The Differential-Developmental Model (DDM) offers a viable framework for understanding intelligence.
- Mental speed components, measured via chronometric methods, are key predictors of intelligence and cognitive development.
- Further research is warranted to refine and expand upon the DDM.
Related Concept Videos
01:27Intelligence
8.5K
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...
8.5K
01:30Stress and Mental Health
846
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Individuals with depression often experience challenges in both their personal and professional...
846
01:10Higher Mental Functions of the Brain: Language
3.5K
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
3.5K
01:27Introduction to Developmental Psychology
1.5K
Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.Developmental MilestonesA key concept in developmental psychology is...
1.5K
01:29Measures of Intelligence
8.4K
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;...
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;...
8.4K
01:29Three Developmental Domains
1.0K
Human development is typically examined across three main domains: physical, cognitive, and socio-emotional. These domains represent the significant areas of change and continuity throughout the lifespan, from infancy to late adulthood.
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and weight,...
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and weight,...
1.0K