1 394. EXPERIMENTAL PSYCHOLOGY. 449 



To these may be added the following, as investigations rather 

 suggested or begun, than in any sense concluded : — 



(8.) The Intensifying Effect of Attention. — Does attention intensify 

 its own content, or merely inhibit other content ? 



(9.) Apperceptive Completion. — Within what limits do we overlook 

 misprints, complete faulty stroboscopical images, etc. ? 



(lo.') The Influence of Visual upon Tactile Space. — How far is a space 

 judgment in cutaneous terms possible ? 



(11.) Mental Fatigue. — Cf. the Amev. Journ. of Psych., the Zeits.f. 

 Psych., etc. 



(12). The Psychological Basis of Visual Aesthetics. (Content.) 



However incomplete, within the lines laid down for it, this list 

 may be, it will at least serve its double purpose : it will indicate the 

 nature of some of the current problems in experimental psychology, 

 and prove that that science is not simply the science of sensation. It 

 takes no account of recent work in social psychology, psychogenesis, 

 mental pathology, or animal psychology. 



E. B. TiTCHENER. 



2 G 



