Describe the significance of cholecystokinin (CCK) for the regulation of eating
What will be an ideal response?
Answer: CCK is released into blood upon the entry of fats into the duodenum. CCK is thus in a position to provide a satiety cue to the brain. Injection of CCK reduces eating in the short-term. Obesity is noted in rats for which a genetic mutation impairs the production of CCK receptors.
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A researcher surveys people at one time and compares the answers for people of different ages. Which kind of research design is this?
a. Cross-sectional b. Longitudinal c. Retrospective d. Prospective
Studies of the impact of noise on people indicate that
a. only very loud, punishing noise leads to any ill-effects. b. people can cope with noise, but in time they begin to display ill-effects. c. people are distracted by the noise, but it leads to no long term effects. d. individuals seek out environments that are somewhat noisy, but not too noisy.
What do we call the portion of the sampling distribution in which values are considered too unlikely to have occurred by chance?
a. Region of criterion value b. Region of critical value c. Region of rejection d. Critical value
Donna is so focused on the idea of having a "big bowl" of ice cream that she refuses to eat ice cream off a plate, even though the plate has more ice cream. Her refusal is an example of
a. egocentrism. b. conservation. c. animistic thinking. d. centration. e. object permanence.