Through the analysis primarily of the child’s capacity for remembering additive and multiplicative logical structures, and his remembrance of causal and spatial structures, the authors investigate whether memories pursue their own course, regardless of the intelligence or whether, in specified conditions, mnemonic improvements may be due to progress in intelligence. They examine the relationship between the memory’s figurative aspects (from perceptive recognition to the memory-image) and its operational aspects (the schemata of the intelligence), and stress the fundamental significance of the mnemonic level known as the ‘reconstructive memory’. This was a pioneering work at the time, presenting illuminating conclusions drawn from extensive research, together with a number of constructive ideas which opened up a fresh approach to an important area of educational psychology.