Sam skips school so that he can play video games at the arcade. Sam's parents find him there and make him mow the lawn when they get home. As a result of having to mow the lawn, Sam doesn't skip school to go to the arcade anymore. Having to do something he dislikes as punisher for the problem behavior is an example of:

a. extinction
b. negative punishment
c. negative reinforcement
d. the Premack Principle

Who is the executive branch checking when the president calls a special session of congress

Explain how the ideas of karl marx came to influence american workers in the late 1800s

According to ohrp, a problem is an “unanticipated problem” when it meets which of the following criteria: unexpected, related or possibly related to the research, suggests that the research does not put the subjects or others at greater riskunexpected, related or possible related to the research, suggests the research puts subjects or others at greater riskunexpected, unrelated to the research but still occurring with a subject, suggests the research puts others at greater riskexpected, related or possible related to the research, suggests the research puts others at greater risk