Psychologists in Canada have rekindled a century-long debate about whether intelligence is a unitary construct. Adam Hampshire, Adrian Owen and Beth Parkin at the University of Western Ontario, together with former New Scientist editor Roger Highfield, claim in their Neuron paper that intelligence is made up of three components - memory, logic and verbal - each reflected in the functioning of a discrete brain network (tinyurl.com/a6w48ym).
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