Which president's use of government policy as economic stimulus ushered in the modern era of U.S. government fiscal policy?

Watson and Rayner (1920) conducted a classic study in psychology using a subject known as Little Albert. In that experiment, the researchers conditioned Little Albert to associate a white rabbit with being scared

What type of design was used by Watson and Rayner (1920)? a. matched subject design b. within subject design c. single subject design d. between subject design

Traditional biofuels, such as wood, ______.

a. are environmentally friendly b. are seldom used for heating homes c. are highly efficient d. create hazardous gases