The delegation problem where the principal cannot observe the agent’s type (preferences, motivations, or skills) is known as:

The earliest descriptions of an orderly and knowable universe are found in

A) Ionian philosophy. B) the writings of Plato. C) Peripatetic philosophy. D) the work of Ptolemy.

If human participants cannot be selected randomly,

a. then select with a conscious bias and keep that in mind when interpreting data. b. then use non-human participants so you can get them at your convenience. c. it is imperative to match participants to each other (individual matching). d. it becomes more important to report exactly how participants were selected and assigned.