An animal learns to pull a lever in order to stop receiving a shock. This is an example of __________

Kathryn always watches the reruns of her favorite TV show. She generally doesn't smile or show any expression while watching these. Once, while watching an episode, Kathryn was asked to smile by her mom. When she watched the episode while smiling, she reported finding the episode more humorous, even though she had seen it several times earlier. This behavior is consistent with the _____

A) facial-feedback hypothesis B) Cannon-Bard theory C) cognitive-dissonance theory D) frustration/aggression hypothesis

Small-for-date infants __________ than preterm infants

A) catch fewer infections during the first year B) are less likely to die during the first year C) more often show evidence of brain damage D) have higher intelligence tests by middle childhood