In experiments on the extinction of conditioned responses, Pavlov found that repeated presentations of the conditioned stimulus without the unconditioned stimulus led to__________of the conditioned response

Which is a good "design principle?"

(a) the designer should put the control information in the environment (b) the designer should make the control information as arbitrary as possible (c) the designer should make the mappings of the control information as arbitrary as possible (d) the user should adopt the designer's conceptual model (e) all of the above

The cost of alcohol abuse in America is estimated to be about ________ annually

a. $200 billion b. $1 billion c. $100 million d. $10 billion