The "Jigsaw Classroom" refers to an experiment aimed at reducing prejudice by forcing people from different ethnic backgrounds to work on a jigsaw puzzle together

"Turn that frown upside down, mister!" Maybe you heard this line from a grandparent at some point in your life. Okay, if you are a girl, maybe it was "missy," but you get the point! According to the __________ hypothesis,

smiling can, in fact, cause you to become happier! a. myographic stimulation b. facial feedback c. positive muscular d. masking

How many of the 6 to 14 month old infants tested by Walk and Gibson refused to crawl over the deep side of the visual cliff to their mothers?

a. 25% of them b. none of them c. all of them d. 75% of them