It’s worth noting that an emphasis on spatial reasoning & visualization ability was one of the reasons behind SMPY choosing to use SAT-M for screening, as one of the theses is that, after general intelligence, visuospatial reasoning (as opposed to the more academically-prized glibness & verbal ability) may be the next most important requirement for major STEM achievement.
Arnheim mirrors: https://www.gwern.net/docs/iq/1965-walkup.pdf https://www.gwern.net/docs/psychology/1969-arnheim-visualthinking.pdf https://www.gwern.net/docs/psychology/1980-arnheim.pdf
It’s worth noting that an emphasis on spatial reasoning & visualization ability was one of the reasons behind SMPY choosing to use SAT-M for screening, as one of the theses is that, after general intelligence, visuospatial reasoning (as opposed to the more academically-prized glibness & verbal ability) may be the next most important requirement for major STEM achievement.