Looking for a free + psychometrically robust Intelligence Test that measures the "g" factor + verbal, numerical & logical reasoning abilities to run a Concurrent Validity Study.
Hi, may I suggest SYSTEMS-R for an indicator of general cognitive functioning
SYSTEMS-R cognitive screening tool L J Fisher (2020) Sydney Australia
It is now available open access on Research Gate with a strong research base
Bornholt, L. J., [L J Fisher] Ajersch, S., Fisher, I. H., Markham, R. H., & Ouvrier, R. A (2010) Cognitive screening for children and adolescents: General limits or ceiling effects? Journal of Child Neurology, 25, 567-571.
Spencer, F. & Bornholt, L. [L J Fisher] (2005) Investigating Moderators of Test-retest Reliability in Screening Children's Cognitive Functioning, Australian Journal of Educational and Developmental Psychology, 5, 91-106.
Bornholt, L. J., [L J Fisher] Spencer, F. H., Fisher, I. H., & Ouvrier, R. A. (2004) Cognitive screening for young children: Development and diversity in learning contexts, Journal of Child Neurology, 19, 313-317.
I think Condon & Revelle's International Cognitive Ability Resource might fit your needs. Check out Article The international cognitive ability resource: Development an...
They published evidence of a general factor with 4 factors: Letter/Number (pattern sequence recognition), Verbal Reasoning, Matrix Reasoning, and 3D Rotation.
You can apply for use at https://icar-project.com/ I used it for a study and they were very accommodating.
Steve
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