Mathematical problem-solving is not a single cognitive ability — it draws on numerical reasoning, algorithmic computation, applied analytic thinking, spatial visualization, and quantitative pattern recognition, with different problems weighting these components in different proportions. A test built to measure mathematical problem-solving therefore covers a functional space rather than a single …
The SAT was designed as a college admissions test, not an IQ test. But empirical work over the past two decades has shown that the two are very closely related — close enough that, with adjustment, an SAT score can serve as a respectable estimate of a person’s general cognitive …
The SAT is the most widely taken standardised cognitive test in the United States, and its results are interpreted by college admissions offices as if they reveal something specific about applicants’ cognitive abilities. The actual psychometric question is sharper than the everyday interpretation suggests: when a student gets a higher …
Two of the most widely used adult intelligence tests — the Stanford-Binet Intelligence Scales (SB5) and the Wechsler Adult Intelligence Scale (WAIS) — produce notably different scores when administered to the same person on the same day. The discrepancy is not random. Silverman, Miezejeski, Ryan, Zigman, Krinsky-McHale, and Urv (2010) …
The question in the title was first posed in print by Benson, Hulac, and Kranzler (2010), who ran the earliest independent factor analysis of the Wechsler Adult Intelligence Scale-Fourth Edition against Cattell-Horn-Carroll (CHC) theory. Sixteen years and a published successor later, the answer has matured into something the original publisher’s …
The construct validity of a cognitive test rests on the pattern of its correlations with other measures of the same and related constructs. A test that claims to measure crystallized intelligence should correlate strongly with established crystallized-IQ measures, more weakly with measures of distinct constructs (e.g., processing speed, working memory), …
Crystallized intelligence and verbal ability are conceptually overlapping but operationally distinct constructs. The Cattell-Horn theory (Cattell, 1963; Horn & Cattell, 1966) treats crystallized intelligence as the broad ability that subsumes verbal-knowledge tasks, but a battery designed to measure crystallized intelligence directly may share so much variance with a battery designed …
A 2010 study by Jouve, drawing on 251 examinees of the Jouve Cerebrals Test of Induction (JCTI), found that males scored higher than females on inductive reasoning at both middle/high-school and college levels, with no reliable interaction between gender and education stage. The mean gender gap was approximately 4.7 raw-score …
The reliability of a cognitive test is the consistency with which it measures whatever it measures — the precision of the scores it returns, expressed as the proportion of observed-score variance attributable to true-score variance rather than to measurement error. A test with a Cronbach’s alpha of 0.95 leaves only …
The General Knowledge (GK) subtest of the Jouve Cerebrals Crystallized Educational Scale (JCCES) measures factual breadth — the accumulated stock of information about the world that crystallized intelligence theory treats as a core component of acquired cognitive ability. A subtest of this kind has to satisfy two structural requirements: items …
