Is General Intelligence Little More Than the Speed of Higher-Order Processing?

@article{Schubert2017IsGI,
  title={Is General Intelligence Little More Than the Speed of Higher-Order Processing?},
  author={Anna-Lena Schubert and Dirk Hagemann and Gidon T. Frischkorn},
  journal={Journal of Experimental Psychology: General},
  year={2017},
  volume={146},
  pages={1498–1512}
}
Individual differences in the speed of information processing have been hypothesized to give rise to individual differences in general intelligence. Consistent with this hypothesis, reaction times (RTs) and latencies of event-related potential have been shown to be moderately associated with intelligence. These associations have been explained either in terms of individual differences in some brain-wide property such as myelination, the speed of neural oscillations, or white-matter tract… Expand
Processing speed, working memory, and executive functions: Independent or inter-related predictors of general intelligence
Abstract Both working memory capacity (WMC) and processing speed (PS) have been discussed as important covariates of individual differences in intelligence. Recent results indicated that especiallyExpand
Faster, but not smarter: An experimental analysis of the relationship between mental speed and mental abilities
Abstract Individual differences in the speed of information processing may contribute to individual differences in general intelligence by enhancing the efficiency of information processing. So far,Expand
Neurocognitive Psychometrics of Intelligence: How Measurement Advancements Unveiled the Role of Mental Speed in Intelligence Differences
More intelligent individuals typically show faster reaction times. However, individual differences in reaction times do not represent individual differences in a single cognitive process but inExpand
Disentangling the Effects of Processing Speed on the Association between Age Differences and Fluid Intelligence
TLDR
This study investigated whether individual differences in diffusion model parameters and in ERP latencies associated with higher-order attentional processing explained the association between age differences and fluid intelligence, and suggested that the relationship between age Differences and fluid Intelligence is multifactorially determined. Expand
A chronometric model of the relationship between frontal midline theta functional connectivity and human intelligence.
TLDR
The results suggest that more intelligent individuals benefit from an adaptive modulation of theta-band synchronization during the time-course of information processing, which supports theoretical accounts of intelligence and emphasizes the role of interregional goal-directed information-processing for cognitive control processes in human intelligence. Expand
Individual differences in cortical processing speed predict cognitive abilities: a model-based cognitive neuroscience account
TLDR
It is found that a higher neural speed predicted both the velocity of evidence accumulation across behavioral tasks as well as cognitive ability test scores, suggesting that speeded neural information-processing may facilitate evidence accumulation during decision making and memory updating and thus yield advantages in general cognitive abilities. Expand
Individual Differences in Cortical Processing Speed Predict Cognitive Abilities: a Model-Based Cognitive Neuroscience Account
Previous research has shown that individuals with greater cognitive abilities display a greater speed of higher-order cognitive processing. These results suggest that speeded neural informationExpand
An Investigation of the Slope Parameters of Reaction Times and P3 Latencies in the Sternberg Memory Scanning Task – A Fixed-Links Model Approach
TLDR
The FLM proved suitable to investigate the association between the speed of short-term memory scanning and intelligence and found no evidence for a linear increase, but a general increase from the smallest set size to the two larger ones. Expand
The latency of a visual evoked potential tracks the onset of decision making
TLDR
Evidence is reported that visual evoked potentials (EPs) around 200 ms after stimulus presentation track the time of visual figure-ground segregation before the onset of evidence accumulation during decision making, adding to the growing literature that suggests that EEG signals can track the component cognitive processes of decision making. Expand
Do Non-Decision Times Mediate the Association between Age and Intelligence across Different Content and Process Domains?
TLDR
Estimated mediation models investigated whether age differences in diffusion model parameters account for the negative relation between age and intelligence, across different intelligence process domains (processing capacity, memory, psychometric speed) and different intelligence content domains (figural, numeric, verbal). Expand
...
1
2
3
4
...

References

SHOWING 1-10 OF 78 REFERENCES
Intelligence and speed of information-processing: A review of 50 years of research
This study reports the results of a large scale literature review of research studying the relationship between intelligence and speed of information-processing. Data from 172 studies, with a totalExpand
Decomposing the relationship between mental speed and mental abilities
Abstract It is unclear whether different elementary cognitive tasks (ECTs) are associated with intelligence because these tasks tap the same basic cognitive process (suggesting a single mental speedExpand
An integrated perspective on the relation between response speed and intelligence
TLDR
The approach provides an integrative perspective on intelligence findings and test and confirm a strong prediction of the diffusion model, namely that the worst performance rule generalizes to phenomena outside of the field of intelligence. Expand
Intelligence and the psychological refractory period: A lateralized readiness potential study
The psychological refractory period (PRP) refers to a delay of response times (RT) to the second of two stimuli when these stimuli are presented in rapid succession. If this limitation of rapidlyExpand
Intelligence, reaction time, and working memory in 4- to 6-year-old children
Abstract The purpose of this study was to determine whether the results previously found in adults, demonstrating a relationship between intellectual ability, speed of information processing, andExpand
Intelligence, reaction time, and event-related potentials
Event-related potentials and reaction time (RT) were recorded concurrently during the performance of six simple cognitive tasks for subjects (N = 30) who varied in mental ability. P300 latency to theExpand
Modeling Mental Speed: Decomposing Response Time Distributions in Elementary Cognitive Tasks and Correlations with Working Memory Capacity and Fluid Intelligence
Previous research has shown an inverse relation between response times in elementary cognitive tasks and intelligence, but findings are inconsistent as to which is the most informative score. WeExpand
Mental Ability, P300, and Mismatch Negativity: Analysis of Frequency and Duration Discrimination.
Individual differences in mental ability (MA) were examined with event-related potentials (ERP). In addition to using an auditory frequency discrimination task, a duration discrimination task wasExpand
Retest reliability of event-related potentials: evidence from a variety of paradigms.
TLDR
It is confirmed that a range of prominent ERPs provide highly stable neurophysiological indices of human cognitive function and peak latency reliability varied substantially across components and ranged from weak to strong. Expand
Individual differences in working memory within a nomological network of cognitive and perceptual speed abilities.
TLDR
The authors assess the construct space for WM and g and demonstrate that WM shares substantial variance with perceptual speed (PS) constructs and construct overlap between PS and WM is investigated. Expand
...
1
2
3
4
5
...