The results of a study by Ingham and colleagues (1974) using rope pulling, in which confederates were thought to be pulling on the rope but in fact were not, indicated that differences between actual and potential performance were primarily due to:.

Agroup of people who, because of their physical characteristics or cultural practices, are singled out and treated unequally.

Why were so many distinctive cultures able to develop over time in asia?

How has the elimination of trade barriers affected the movement of goods among member countries of the european union? a. member countries are able to produce all the goods they need. b. goods can move freely among member countries. c. member countries no longer need to trade with countries outside the eu. d. larger countries are able to import more goods than smaller ones.