Caitlin is shipwrecked and abandoned on the eastern side of a deserted island. The island is rich with varied food sources and materials to make shelter. Caitlin has seen many strange animals on this island and is often unsure of her safety. She has been focused solely on survival and has been alone for over a month, but is now planning to hike to the western side of the island over the next few days to see if there are any other people on the island.

Deseribe how each of the following will impact her ability to survive on the island.

a. Drive-reduction theory
b. Affiliation needs
c. Schachter-Singer two-factor theory
d. Universal emotions
e. Stress impact on the immune system
f. Sleep deprivation
g. Ingestion of hallucinogenic plants .