Home›Open Questions›Does Spearman's g reflect a genuine unitary cognitive ability, or is it a statistical artifact of overlapping mental processes?Open QuestionsDoes Spearman's g reflect a genuine unitary cognitive ability, or is it a statistical artifact of overlapping mental processes?Citation FormatsGeneral ReferenceGeneral Reference Citation TextPsychology Atlas. "Does Spearman's g reflect a genuine unitary cognitive ability, or is it a statistical artifact of overlapping mental processes?." Accessed August 30, 2026. https://psychology.interactiveatlas.org/open-questions-index/g-factor-unitary-or-artifact.Copy General ReferenceAPA StyleAPA Style Citation TextPsychology Atlas. (n.d.). Does Spearman's g reflect a genuine unitary cognitive ability, or is it a statistical artifact of overlapping mental processes?. Retrieved August 30, 2026, from https://psychology.interactiveatlas.org/open-questions-index/g-factor-unitary-or-artifactCopy APA StyleBibTeXBibTeX Citation Text@misc{psychologyatlas-does-spearman-s-g-reflect-a-genuine-unit, author = {Psychology Atlas}, title = {Does Spearman's g reflect a genuine unitary cognitive ability, or is it a statistical artifact of overlapping mental processes?}, year = {2026}, url = {https://psychology.interactiveatlas.org/open-questions-index/g-factor-unitary-or-artifact}, note = {Accessed August 30, 2026} }Copy BibTeXOpen QuestionCross-Tradition ConnectionsSourcesComments (0)Reader Challenges (0 open reader challenges)Open QuestionSpearman's own model of a single general factor and rival sampling-theory models, which explain the same positive correlations among test scores as an artifact of overlapping mental processes rather than one underlying capacity, are statistically indistinguishable from the correlational data alone.What would resolve this Evidence that does not depend on the same correlational test-score structure both rival models already fit equally well, for example converging biological or neurological findings for a single general capacity distinct from a bundle of overlapping specific processes.OpenWikipedia: G Factor (Psychometrics)Cross-Tradition ConnectionsQuestion OnPsychometrics, Theories and Concepts Well-attested Source Wikipedia: G Factor (Psychometrics)tier 2SourcesWikipedia: G Factor (Psychometrics)tier 2Wikimedia FoundationOn the debate sectionQuote, On the debate sectionIt has been shown that it is not possible to distinguish statistically between Spearman's model of g and the sampling model; both are equally able to account for inter correlations among tests.View the SourceWikipedia: G Factor (Psychometrics)tier 2Wikimedia FoundationQuestion On: PsychometricsView the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0 open reader challenges)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.View At A Past YearThe atlas records no dated fact of its own for this entry, so there is no other year to choose.Show This Year