A(n) experiment guards against experimenters' tendency to prejudge results by eliminating the possibility of either the researcher or the subjects knowing which group is the control and which group is the experimental.

The array of significant individuals who serve as sources of social support is called the social

In the spring of 1989, thousands of protesters gathered in tiananmen square in beijing, china. they rallied around a plaster statue that resembled the statue of liberty which they called “the goddess of democracy.” these protestors were seeking a) united states assistance in gaining better health care. b) economic reforms which would allow more chinese exports. c) the boycott of the future olympic games scheduled for beijing. d) political reforms to allow more freedom of speech and political representation.

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now