However, it does not include a general intelligence factor (abbreviated g), since the framework is used to describe learners in terms of profiles of strengths and weaknesses, as opposed to using labels, diagnoses, or broad ability levels.
[31][32] An intelligence theory that has drawn considerable attention is Cattell-Horn-Carroll (CHC), which is grounded in extensive factor analytic research from cognitive ability test databases, as well as studies of development and heritability.
The broad cognitive abilities (stratum II) include fluid reasoning (or Gf, forming and recognizing logical relationships among patterns, inferencing, and transforming novel stimuli) and comprehension-knowledge (or Gc, using language and acquired knowledge).
The Structure of Intellect (SOI) model includes three axes (with 5-6 components per axis) that form a 3-dimensional cube; because each dimension is independent, there are 150 different potential aspects of intelligence.
[37] More recently, the PASS (Planning, Attention, Successive, and Simultaneous) model[38] yields both a global index of ability while emphasizing specific cognitive processes.