Intelligence Is/Is Not Neural Latency: A Comment on Schubert et al. (2023)

Abstract

As the name implies, general intelligence is general. Any two sufficiently large and diverse cognitive test batteries will measure the same g factor. Recent results also suggest that the g factor can be measured from neural latencies. Schubert et al. (2023) found that their best-fitting models showed a correlation that was indistinguishable from identity between psychometric g and a g factor based on event-related potentials. The finding that g can be measured from neural latencies extends the realm of the positive manifold beyond psychometric tests and into measurement via observation of the brain itself.