Of the emotions listed following, ______________ is the emotion an infant would likely display later in development than the others

Since natural selection can only act on characteristics that already exist,

__________ provides the raw material on which natural selection can act. a. retention b. extension c. fixation d. generation e. variation

A young girl is just learning to dress herself. At first, the parents call her a "big girl" just for putting on her clothes "frontwards," even if they are not buttoned

Then, they call her a "big girl" if she tries to button them--even if the buttons are not in the right holes. Then, they call her a "big girl" only if she buttons them correctly. They have been using: a. discrimination. b. generalization. c. higher-order conditioning. d. successive approximation.