Evidence for a unitary structure of spatial cognition (Gv) beyond general intelligence (g)

A very convincing study supporting a general unitary, but multidimensional, spatial Gv factor. Click here for Open Access copy.Evidence for a unitary structure of spatial cognition beyond general intelligenceMargherita Malanchini, Kaili Rimfeld, Nicholas G. Shakeshaft, Andrew McMillan, Kerry L. Schofield, Maja Rodic, Valerio Rossi, Yulia Kovas, Philip S. Dale, Elliot M. Tucker-Drob,mand Robert PlominAbstract Performance in everyday spatial orientation tasks (e.g., map reading and navigation) has been considered functionally separate from performance on more abstract object-based spatial abilities (e.g., mental rotation and visualization). However, few studies have examined the link between spatial orientation and object-based spatial skills, and even fewer have done so including a wide range of spatial tests. To examine this issue and more generally to test the structure of spatial ability, we used a novel gamified battery to assess six tests of spatial orientation in a virtual environment and examined their association with ten object-based spatial tests, as well as their links to general cognitive ability (g). We further estimated the role of genetic and environmental factors in underlying variation and covariation in these spatial tests. Participants (N = 2660; aged 19 –22) were part of the Twins Early Development Study. The six tests of spatial orientation clustered into a single ‘Navigation ' factor that was 64% heritable. Examining the structure of sp...
Source: Intelligent Insights on Intelligence Theories and Tests (aka IQ's Corner) - Category: Neuroscience Tags: g Gv heritability spatial cognition Source Type: blogs