Bauhaus-Universität Weimar

Experimental Psychology: A Manual of Laboratory Practice, Vol. II: Quantitative Experiments, part 1: Student's Manual
Titchener, Edward B.
§ 7- Questions xli 
(2) Define Psychophysics. Describe briefly the historical con¬ 
ditions under which the science arose. 
(3) Discuss the statement: “Sensation, under all its four 
aspects, is a continuous function of stimulus.” 
(4) Discuss the statement that least sense steps need not, 
logically, be equal sense steps. Illustrate. 
(5) Throw into quantitative form all the experiments worked 
out qualitatively in vol. I. State which of these quantitative 
problems you deem to be the most important, and why. 
(6) If two different brightnesses are given, and we are re¬ 
quired to find a third brightness that lies for sensation midway 
between them, we are said to equate two sense-distances. The 
distance, not the sensation, is the magnitude. How does the 
distance come to consciousness ? What is the material of judg¬ 
ment in the experiment ? 
(7) Rewrite the affective formula of § 6 (2), in order to make 
it square with the hypothesis that mental distances, not mental 
processes, are measurable. 
(8) Discuss the hypothesis that the RL and the DL are facts 
of the same order, phenomena of ‘ friction.’ 
(9) Go over the list of quantitative experiments that you have 
made for Question (5), and separate those in which the measure¬ 
ment is mental from those in which it is physical. What is the 
relative importance, for psychology, of the two classes of ex¬ 
periments ?


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