Aresearcher examined the effect of lighting on learning. randomly assigned participants learned material while using a 100 watt or a 125 watt bulb. there were no differences between the two groups. the nonsignificant results may have occurred because of:

a. a costly measure of learning.
b. insufficient strength of the manipulation.
c. selection differences.
d. all of these

Which of the following are ways that people in democracies can take part in politics and gonverments

Identify the constitutional principle that is common in both this excerpt and federalist no. 51. based on the constitutional principle identified in part (a), explain how the perspective in this excerpt compares with the perspective in federalist no. 51. explain how the constitutional principle identified in part (a) is reflected in the constitution, including two examples to explain how it affects the u. s. political system

Why did working women earn one-thrid to one-half as much as men