A vice-president has a very level of responsibility as well as workload. Often, the people at higher levels have to take risky decisions, and that too in a shorter time. They supervise a large portion of a company.
A human resource person may have a high workload but they don't have to supervise such a significant portion of the company, and they are not responsible for improvising the company, year after year, but a VP is.
A reinforcer is a stimulus that increases the probability that the behavior will occur again. An example of a reinforcer would be a dog treat. If you want your dog to follow the command "sit", you would follow the behavior with a dog treat, or reinforcer, to ensure that the behavior of "sit" would occur again.
Giuseppe Garibaldi is best known for his military leadership in the unification of Italy in the 19th century.
