Answer to Question 1
Negative reinforcement can be defined as the termination, reduction, or postponement of a stimulus, contingent upon a response, which results in an increase in the future probability of that response.
Answer to Question 2
Answer should include: Two or more different behaviors for one participant are selected and baseline measurement for each behavior is conducted. After steady state responding is obtained in baseline, the independent variable is applied to one behavior while maintaining baseline conditions for the other