Biography
+—————————–+
| Spearman’s ‘g’ Factor |
| (General Cognitive Ability) |
+————–+————–+
|
+———————–+———————–+
| |
v v
+————————-+ +————————-+
| Eductive Ability | | Reproductive Ability |
| (Pattern Extraction & | | (Acquired Knowledge & |
| Relational Synthesis) | | Verbal Crystallization)|
+————+————+ +————+————+
| |
v v
+————————-+ +————————-+
| Raven’s Progressive | | Mill Hill / Crichton |
| Matrices | | Vocabulary Scales |
+————————-+ +————————-+