1.1.1 - CHC model

Question 1

What are the components of the CHC model?

Answer 1

Memory
Gsm - short term acquisition and retrieval
Glr - long term acquisition and retrieval

Fluid/Crystallised
Gf - executive (fluid) reasoning (corresponds to PRI index)
Gc - verbal-conceptual (crystallised) reasoning (corresponds to VCI)

3 Rs
Grw - reading/writing
Gq - quantitative

Speed
Gt - correct decision speed
Gs - cognitive processing speed

Others
Gv - visual spatial
Ga - auditory

Question 2

What are the names for the CHC model.

Answer 2

Carroll Horn Cattell model
Cattell Horn Carroll model
Gf Gc model

Question 3

Whos model of general intelligence did the CHC model derive?

Answer 3

Spearman

Question 4

What does the CHC explain?

Answer 4

Intelligence can be described in general terms; and it can be described in specific terms.

It’s a three stratum model, just like the WISC. It gives general intelligence, indexes and subscales.

It developed from Factor Analytic Theory, which proposes that intelligence is made up of numerous factors, and that each of these factors are also made up of subscales.

The Weschler tests subscribe to the factor analytic model. PRI is linked to fluid intelligence, VCI to crystallised.

Question 5

What are the subscales of each of the Weschler indices?

Answer 5

VCI - similarities, vocabulary, comprehension
PRI - block design, picture concepts, matrix reasoning
WM - digit span, letter number sequence
PS - coding, symbol search

Question 6

Who was the dude who copped a pole through the head, and what happened to him

Answer 6

Phinnaeus Gage was blasting rock in 1848 when a tamping iron when through his LEFT frontal lobe, and LEFT him with significant changes to his behaviour and personality

This was interesting to phrenologists (those who examined the head for clues about brain function)

This allows us to develop models of which parts of the brain operate independently to others.