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JOSEPH PETERSON 



esting from several standpoints. It shows not only the dangers 

 of generalizations based on averages, on time and " error " 

 curves without detailed analyses, etc., but also many marked 

 individualities of the several animals. Since it is impossible to 

 say how much mere probability has operated in these early 

 reactions to critical positions in the maze, these reactions are 

 less certainly significant of individual differences than are differ- 

 ences in the more general behavior — speed, cautious attitudes, 

 etc. — so frequently commented upon by various writers. 



Summarizing in tabular form the results of all the critical 

 choices of the several animals of the three groups, and, finally, 

 of all together, we get the following tables (Tables IV-XIV) : 



TABLE IV 



Summary of Critical Choices of First Three Trials by Six Rats 



in Maze IB 



13 r = contrary to recency expectations; b = contrary to both recency and fre- 

 quency expectations; Rf = in agreement with recency, and contrary to frequency 

 expectations; Fr = the reverse of Rf; R = in agreement with recency expecta- 

 tions; B = in agreement with both frequency and recency. 



