非強化試行での目標箱滞在時間の長さのフラストレーションの強さに及ぼす効果
1971 年 42 巻 1 号 p. 14-23
詳細
1971 年 42 巻 1 号 p. 14-23
Although it had been predicted in the FE studies using the double runway and partial reinforcement schedule in the first goal box that the inverted-V shaped relationship existed between the length of the detention time in the first goal box in nonreinforced trials and the strength of frustration produced by nonreinforced trials, the data did not support the relationship. This study tried to confirm the inverted-V shaped relationship.
Using the double runway, running time in each part of the second runway was measured, and 120 trials were used in a schedule of 10 trials per day for 12 days. Four groups were used each consisting of six or seven subjects (albino rats). In the first goal box, one group was the continuous reinforcement group serving as the control group (C-0), and the other three groups were partial reinforcement (50%) groups. The period of detention time (in seconds) chosen among the three lengths (2.5sec, 10.5sec, 30sec) in the first goal box in nonreinforced trials (2.5sec, 10.5sec, 30sec) was assigned to each group of the three partial reinforcement groups (P-2.5, P-10.5, P-30).
Results were as follows: 1. There was the inverted-V shaped relationship between the speed in nonreinforced trials (F speed) and the length of the detention time. Furthermore P-10.5 group was superior to C-0 group in F speed. Therefore, the inverted-V shaped relationship between the length of the detention time and the strength of frustration was presumed.
2. The difference among groups in the speeds in reinforced trials (R speed) also was detected and a tendency to the inverted-V shaped relationship between R speed and the detention time length was found. The inverted-V shaped relationship in R speed is discussed.
