Sunday, March 01, 2026
IQ score and the “seduction of quantification”: Concise overview of the historical #eugenics use of #IQ and emerging new conceptualizations—#g #WJV #CHC #POT #processoverlap #schoolpsychology #schoolpsychologists #emergentproperty
Monday, November 04, 2024
A Psychometric Network Analysis of CHC Intelligence Measures: Implications for Research, Theory, and Interpretation of Broad CHC Scores "Beyond g"
(Note. I’ve made several similar posts with a similar message on several social media outlets over the last 1.5 years)
Yes. This may be seen as a brag post (I plead the fifth). But, I really want (need?) to share this recent publication (January 2023). Why? Because, after 40 years of scholarship, I consider this article (which is open access and can be downloaded and read freely) to be one of my 5 top peer-reviewed research publications. The article is part of a special issue (Assessment of Human Intelligence-State of the Art in the 2020s) of the Journal of Intelligence, edited by Alan Kaufman et al. Warning—it is a long article. The article is the result of collaboration with Joel Schneider, Scott Decker and Okan Bulut.
The content of the article pushes the “edge of the envelop” regarding intelligence theories and testing via the use of exploratory psychometric network analysis (PNA) within the context of network non-g (i.e., psychometric g) models of intelligence. This approach represents an emerging paradigm shift for thinking about intelligence theories and testing. As stated by Savi et al. (2021) "factor analysis models dominated the 20th century of intelligence research, but network models will dominate the 21st." I believe Savi et al. are more-or-less correct. I believe PNA and non-g network models can move intelligence theories and testing forward—as they have become stagnant via the repeated use of "common cause" descriptive and taxonomic-generating factor analysis methods. Used in isolation, factor analysis-based intelligence test and theory models constrain school psychologists and other assessment professionals from moving forward (as described in the paper). For far too long, especially in school psychology, we have been "stuck on g" factor analysis based models of test interpretation.
As stated in our article, "newer non-g emergent property theories of intelligence might lead to better intervention research for individuals who have been marginalized by society. Holden and Hart (2021) suggest that network-based non-g theories, particularly those that feature Gwm-AC mechanisms [the working memory-attentional control complex] (process overlap theory in particular) may hold promise as a vehicle for improving, and not harming, social justice and equity practices and valued outcomes for individuals in marginalized groups" (McGrew et al., 2023). Read the original Holden and Hart article if you are interested in the social justice implications of a new way of thinking about intelligence grounded in modern network non-g conceptualizations of intelligence.
Even if the methodological material is not your cup of tea, much of the McGrew et al. (2023) introduction is relevant to assessment practitioners. Also, several sections in the discussion deal with practical implications for understanding new insights into intelligence theories, broad cluster test interpretation in general, and some strengths and weaknesses of the WJ IV CHC test and cluster scores.
If you are not familiar with the Journal of Intelligence (JOI), I would suggest SPs take a look. It is not the Intelligence journal from ISIR. It is the "new kid on the block" and has quickly become a prestigious open access publication outlet with a top notch editorial board. Since it is open access, all articles can be downloaded, read, and shared freely—an awesome free source of emerging thinking in the field of intelligence. JOI is publishing interesting articles from a wide variety of perspectives by a diversity of scholars interested in intelligence, cognition, and related topics. It has become one of my favorite journals the past few years.
Finally, exploratory hierarchical psychometric network analysis methods (along with traditional structural analysis methods) were applied to the WJ V norm data—these results will be in the WJ V Technical Manual (LaForte, Dailey, McGrew, 2025).
My WJ IV conflict of interest (COI) is included in the linked PDF article. My WJ V COI and additional COI information can be found at the MindHub web portal.
Friday, December 06, 2019
Psychometric Network Analysis of the Hungarian WAIS
Friday, November 10, 2017
Research Byte: Is General Intelligence Little More Than the Speed of Higher-Order Processing?
Click on images to enlarge



Article link.
Anna-Lena Schubert, Dirk Hagemann, and Gidon T. Frischkorn Heidelberg University
ABSTRACT
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 integrity, or in terms of individual differences in specific processes such as the signal-to-noise ratio in evidence accumulation, executive control, or the cholinergic system. Here we show in a sample of 122 participants, who completed a battery of RT tasks at 2 laboratory sessions while an EEG was recorded, that more intelligent individuals have a higher speed of higher-order information processing that explains about 80% of the variance in general intelligence. Our results do not support the notion that individuals with higher levels of general intelligence show advantages in some brain-wide property. Instead, they suggest that more intelligent individuals benefit from a more efficient transmission of information from frontal attention and working memory processes to temporal-parietal processes of memory storage.
Keywords: ERP latencies, event-related potentials, intelligence, processing speed, reaction times
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