Cognitive Psychology Exam Qs Ch. 9, 12, 13

58. If a system has the property of graceful degradation, this means that a. it loses information at a very slow rate. b. damage to the system doesn't completely disrupt its operation. c. it is either functioning at 100 percent, or it is not functioning at all. d. it can be set to operate at "low efficiency" or "high efficiency" depending on the demand of the current task.

58. b. damage to the system doesn't completely disrupt its operation

56. The activity that represents a particular object is established in a PDP circuit through a process of learning that involves a. adjusting the weights of inhibitory and excitatory connections. b. a process of trial and error. c. comparing the object to objects in other categories. d. adjusting the length of the links that connect the nodes in the circuit.

56. a. adjusting the weights of inhibitory and excitatory connections.

57. One beneficial property of PDP networks is graceful degradation, which refers to the property that a. these computer programs "behave" and respond to damage in ways that mimic actual brain damage. b. learning a new concept does not interfere with remembering a previously learned concept. c. damage to the system does not completely disrupt its operation. d. learning can be generalized between similar concepts to facilitate future learning.

57. c. damage to the system does not completely disrupt its operation