18 



John B. Calhoun 



Table Ila 



Effect of Training and Degree of Strangeness of a Field upon Its Being 

 Entered during 2 Hours of Exposure by Each of 76 Rats" 



B 



'Training" in adjusting to 



-A data: x^ = 10.8045; p less than 0.001; B data; x'' = 13.7110; p less than 0.005. 



stranger a field or the less opportunity there has been to adjust to novel 

 stimuli, the greater will be the tendency for an animal to avoid that field. 



6. Probability of Vacillating at the Termination of Trips 



In the unstructured Ferguson Activity Alley, rats usually went directly 

 out to the point where the trip terminated, then turned around and went 

 directly back to the home compartment. Yet occasionally when a rat 

 made an excursion out into the alley, it would wander back and forth 



Table Hb 



Effect of Kind and Sequence of "Training" in Adjustment to Strange Stimuli 

 UPON Avoidance of an Activity Alley 



" See Section XIV, G, 4 for details of treatment of the four groups. 



