SECTION 20. STUDIES PREPARATORY TO ALL INVESTIGATIONS. 203 



(c) The methodical perfecting of the volitional powers. 



3. ECONOMY OF SENSATIONS. Consequent on willing, 

 where a material act is to be performed, (a) the rapid recog- 

 nition and delicate and swift discrimination of the sensory 

 material offered. 



(b) The application of the above to the sensings which suc- 

 ceed the initiating sensations at intervals. 



(c) The careful education of at least the senses of sight, 

 hearing, and touch, in order to ensure the above. 



(d) The favouring of neatness (or clearness), conspicuousness, 

 and distinctness (or decided separateness), in physical activities 

 generally (e.g., in writing), with a view to facilitating sensory 

 recognition and discrimination. 



4. ECONOMY OF MEMORY. Consequent on willing, where 

 a mental act is to be performed, (a) instantaneous and correct 

 recollection or recognition of the mental movements contem- 

 plated. 



(b) Application of the above to the memory processes suc- 

 ceeding the initiating recollections and recognitions; and, in 

 order to ensure their efficiency, 



(c) The acquisition through training of a good general me- 

 morycomprehensive, durable, ordered, reliable, and respon- 

 sive; 



(d) The acquisition of a good task memory for at least brief 

 periods (days or weeks), of a broad-span memory for briefest 

 periods (seconds or minutes), and the systematic and fauttless 

 memorising of frequently recurring movements, facts, and 

 figures ; 



(e) Methodical and long-continued practice to ensure instanta- 

 neous and correct recollection at the appropriate moment- 

 mental, sensory, muscular of everything habitual relating to 

 a task; and 



(/) The favouring of neatness (or clearness), conspicuousness, 

 and distinctness (or decided separateness), in observation and 

 thought in order to facilitate retention, recognition, and re- 

 collection. 



5. ECONOMY OF MOVEMENTS. The theoretical aim should 

 be, ideally speaking, to complete a whole task with a single, 

 scarcely perceptible, continuous movement. 



(a) The elimination of superfluous movements and operations. 



(b) The substitution, wherever practicable, of a continuous 

 movement for a series of movements. 



(c) The substitution, wherever practicable, of combined for 

 successive movements and operations (e.g., employing simul- 

 taneously, so far as practicable, both hands, every finger, the 

 limbs, etc., for separate operations). 



(d) The utilisation of instruments (tray, note-book, generali- 

 sation, utilising an errand for several objects instead of one. 

 etc.), so as to minimise movements. 



