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Refer to the graph below.

In an experiment, rats were placed in a complex maze with several one-way doors so that a rat wandering around would eventually reach the goal box. When a rat reached the goal box, it was returned to its home cage. This was repeated for several days.
Rats were assigned to one of three groups:
• Group 1 was provided food in the goal box every day.
• Group 2 was provided food in the goal box beginning on the 11th day.
• Group 3 was never provided food in the goal box.
Researchers measured how many errors the rats made across trials on the way to the goal box. Results are shown in the graph.
-Which statement is a valid conclusion?
A) The rats that were provided no food for the first 11 days must have nevertheless learned about the maze.
B) There is no connection between reinforcement and learning.
C) Learning occurs more quickly with a continuous reinforcement schedule than with a partial reinforcement schedule.
D) Animals cannot learn about a maze in the absence of any apparent reinforcement.

Question

Use the following to answer questions :
Refer to the graph below.
  
In an experiment, rats were placed in a complex maze with several one-way doors so that a rat wandering around would eventually reach the goal box. When a rat reached the goal box, it was returned to its home cage. This was repeated for several days.
Rats were assigned to one of three groups:
• Group 1 was provided food in the goal box every day.
• Group 2 was provided food in the goal box beginning on the 11th day.
• Group 3 was never provided food in the goal box.
Researchers measured how many errors the rats made across trials on the way to the goal box. Results are shown in the graph.
-Which statement is a valid conclusion?
A) The rats that were provided no food for the first 11 days must have nevertheless learned about the maze. 
B) There is no connection between reinforcement and learning. 
C) Learning occurs more quickly with a continuous reinforcement schedule than with a partial reinforcement schedule. 
D) Animals cannot learn about a maze in the absence of any apparent reinforcement.

Quizplus · Accepted Answer

The graph shows that the error rates of Group 3 (which was never provided food in the goal box) decreased over time, indicating that they learned about the maze despite not receiving any reinforcement in the form of food rewards. Therefore, we can conclude that the rats that were provided no food for the first 11 days must have nevertheless learned about the maze.

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