General and SpecificIntelligenceScores on Simon andBinet’s test items wereall loosely correlatedwith each other, whichmotivated CharlesSpearman to formulatethe theory of Generaland Specific Intelligence.According to Spearman (1927), we acquirespecialized knowledge for everything we do (s).However, the general effectiveness (think: mentalhorsepower) of each individual’s brain also applies toeverything we do (g).-may have one intelligence for one topic and completely different intelligence for another topic