Blog

Which tribe below was NOT considered a part of the “five civilized tribes” of the early 19th century?

Which Shawnee Chief, known as “the Prophet”, advocated for cultural separation from Whites and a return to traditional Indian culture in Prophetstown Indiana (1811)?

Which option below resulted in the U.S acquiring present-day Florida and the southern strip of present-day Mississippi and Alabama?

Which event below prompted John Calhoun to leave his position as Vice President under Andrew Jackson to retake his position in the Senate?

During the Constitutional Convention of 1787, James Maddison proposed this plan, including a two-house legislature in which population would determine the number of representatives from each state.

Which of these early American political parties believed in a strict interpretation of the Constitution?

Which Constitutional amendment abolished slavery?

Which option was NOT a factor in the U.S. economic recession after the Revolutionary War?

Freeman and Hare (2015) studied peacock displays.  They found that when male peacocks fan their tail in a mating display, the rustling feathers generate a low-frequency noise called “infrasound” which is pitched so low, humans can’t hear it, but peafowl can. Why, given the male’s peacock’s flashy tail and loud high-frequency hoots, would they also need to communicate with infrasound? (In your answer, make sure to discuss visual and sound communication, mating and predation in addition to where peacocks live—jungles).

Consider the “information center” hypothesis for ospreys.  Imagine for simplicity that each information center only contains two ospreys:  Leader (L) and Slacker (aka: follower-(S).  In the morning, each leader flies off in search of schooling fish such as alewife; whereas slackers always follow leaders.  Leaders pay a “search” cost (C) that slackers don’t, but always find food worth (V).  Slackers get five less units than (V) when they have a leader to follow (there are many more schooling fish than the leader can eat itself, but the time delay affects the food choice for slackers). (1) Complete the  payoff matrix.  What are the equations/variables for (A), (B), (C) and (D)? (2 pts)   L S L (A) (B) S (C) (D) (2)  Suppose that searching is “cheap”: V = 60 and C = 10.  Is the pure strategy (L) an ESS?  Explain and show your work for full credit. (4 pts) (you may use scratch paper and a calculator) (Hint:  A “pure” strategy means that 100% of the players engage in that behavior and 0% of the players engage in the other behavior) (3) What is the ESS? Explain and show your work.  (Make sure to interpret answer!) (4 pts)