Debbie usually sits quietly and works on crossword puzzles….

Debbie usually sits quietly and works on crossword puzzles. However, a few times each hour, she begins grimacing and then shouts profanities at the hospital staff. This behavior is especially problematic because it is preventing Debbie from reaching her goal of being discharged from the hospital. Debbie is exhibiting (a) ___________.

Over the last year, Lauren has repeatedly experienced sympto…

Over the last year, Lauren has repeatedly experienced symptoms that she believes indicate a heart attack, sending her to the emergency room complaining of dizziness, inability to catch her breath, and heart palpitations. She tells her parents she is afraid she’s going to die, although doctors have found nothing physically wrong. It is likely that Lauren is experiencing _______________________.

When Sally ducked to avoid being hit by a snowball, she reac…

When Sally ducked to avoid being hit by a snowball, she reacted quickly because information about that situation was relayed rapidly through the neurons in her brain. A fatty substance that covers axons, called (the) _____________, helps to speed up her neurons’ action potentials.

Kasparov, a former world chess champion, engages in a routin…

Kasparov, a former world chess champion, engages in a routine of touching all his pieces before he makes the first move. Kasparov won 80 out of 100 games when he did the routine and won only 10 out of 100 games when he did not. The touching routine _____________.