Characterizing Cognitive Dispersion and Its Correlates Across the Adult Lifespan in MIDUS
Laura M Klepacz1, Eric S Cerino2, Jeremy M Hamm1
1Department of Psychology, North Dakota State University, Fargo, North Dakota, USA.
Summary
Increases in cognitive variability (dispersion) may not always signal decline, particularly in nonclinical adults. This cognitive dispersion can indicate healthier profiles, especially for those at higher risk of impairment.
Area of Science:
- Cognitive Neuroscience
- Gerontology
- Psychology
Background:
- Within-person variability in cognitive tasks, known as dispersion, is linked to cognitive decline in clinical groups.
- Limited understanding exists regarding dispersion in younger, nonclinical, and national populations.
- Clarifying dispersion's role is crucial for its use as a cognitive health indicator.
Purpose of the Study:
- To characterize dispersion and its correlates in a diverse, nonclinical adult lifespan sample.
- To investigate how changes in dispersion over time relate to cognitive aging trajectories.
- To identify demographic and socioeconomic factors influencing the relationship between dispersion and cognitive aging.
Main Methods:
- Utilized data from the Midlife in the United States Study (MIDUS) with 2,229 participants (ages 33-83).
- Analyzed cross-sectional associations between dispersion and performance at two time points.
- Employed autoregressive and moderation models to examine longitudinal changes and influencing factors.
Main Results:
- Higher dispersion correlated with higher mean cognitive performance.
- Increases in dispersion were associated with less decline in mean performance over nine years.
- This association was more pronounced in older adults, women, and individuals with lower education and income.
Conclusions:
- Increased cognitive dispersion may not be universally detrimental in normative adult samples.
- Dispersion can potentially reflect healthier cognitive profiles, especially in at-risk populations.
- Dispersion's interpretation as an indicator of cognitive health requires consideration of individual differences and context.
More Related Videos
10:13Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach
Published on: February 14, 2014
13.7K
12:55Multimodal Protocol for Assessing Metacognition and Self-Regulation in Adults with Learning Difficulties
Published on: September 27, 2020
8.3K
Related Concept Videos
01:30Cognitive Development During Adulthood
50
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
50
01:18Cognitive Development During Adolescence
42
During adolescence, individuals experience significant cognitive development that enhances their understanding of others' emotions and thoughts, known as cognitive empathy. This period is marked by an increased ability to adapt to others' perspectives and a more nuanced understanding of others' mental states, a skill that is foundational for social problem-solving and conflict avoidance. The development of cognitive empathy relies heavily on the theory of mind — the...
42
01:24Revisionist Views of Adolescent and Adult Cognition
23
A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are...
23
01:30Information Processing Approach
30
The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
30
02:45Self-Discrepancy Theory
18.3K
One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.
18.3K
01:07Midrange
3.6K
A somewhat easy to compute quantitative estimate of a data set’s central tendency is its midrange, which is defined as the mean of the minimum and maximum values of an ordered data set.
Simply put, the midrange is half of the data set’s range. Similar to the mean, the midrange is sensitive to the extreme values and hence the prospective outliers. However, unlike the mean, the midrange is not sensitive to all the values of the data set that lie in the middle. Thus, it is prone to...
Simply put, the midrange is half of the data set’s range. Similar to the mean, the midrange is sensitive to the extreme values and hence the prospective outliers. However, unlike the mean, the midrange is not sensitive to all the values of the data set that lie in the middle. Thus, it is prone to...
3.6K