Chloe saw that her friends didn't have training wheels on their bicycles and decided that she could ride better without them. Which two social-cognitive concepts are at work here?

Which of the following have you probably overlearned?

a. this psychology chapter b. the alphabet c. the historical facts surrounding the founding of one's country d. the important world events of the last decade

Sophie is playing volleyball. As she is about to spike the ball over the net, another player on her team accidentally collides with her, and Sophie hits her head against one of the metal poles that holds up the net. Sophie loses consciousness for a few seconds and, in a daze, she walks to the bench to sit down. Although she has a headache for a couple of weeks, she suffers no other effects from

the blow. Sophie has experienced what type of brain injury? a. a contusion c. a laceration b. a concussion d. a cerebrovascular accident