ap psych - final retake

(67): Mathematics achievement scores from a group of tenth graders are shown above. The distribution is normal with a standard deviation of 10. Approximately what percentage of students scored between 50 and 80?

82%

(44): Which of the following is an example of habituation for a dog?

Although the dog responded the first time his owner called his name, the dog stopped responding when his owner called his name multiple times.

(59): Elena wanted to see if taller students were more likely do better on achievement tests. Elana recorded the height of all of her classmates and calculated the standard deviation. If everything else stayed the same, what change to the data would make the standard deviation increase?

If the tallest person were taller

(14):A study was conducted with fifty-five preteens (ages 9-12) who were not getting the recommended amount of sleep for their age. All preteens agreed to participate in the study. The participants were told they did not have to complete the study and could leave the study at any time. During the study, participants were randomly placed into either a group that gradually moved bedtimes earlier by five minutes each night or a control group that slept on their normal sleep cycle. The study's purpose was disclosed to participants once the study was over. Which of the following ethical considerations was most problematic for this study?

Informed consent was not given for the preteens to participate in the study

(15): Rafael has a sleep disorder for which he takes medically prescribed amphetamines. For which of the following sleep disorders is Rafael most likely being treated?

Narcolepsy

(68): The graph depicts data from a test of general intelligence or g. Which of the following best describes the graph?

Negatively skewed distribution

(36): Rudy has chronic trouble staying awake in class. What part of the brain is most likely responsible for Rudy's drowsiness?

Reticular formation

(38): In right-handed individuals, which of the following abilities is predominantly a function of the right hemisphere of the brain?

Spatial reasoning

(40): Tamara's coach reminds the team not to eat for several hours before the basketball game because the digestive process will be slowed down due to the intense activity. Which of the following aspects of the peripheral nervous system is directly responsible for slowing down digestive processes during the game?

Sympathetic nervous system

(74): Dr. Keith conducted a study to investigate whether caffeine improves focus and attention. He selected a random sample of students from his college class and then randomly assigned each of them to drink a cup of coffee or a cup of water before class. At the end of class, he administered a test on their knowledge of class material presented that day. Which of the following is the operational definition of the dependent variable?

Test scores on the class material

(34): Much of the research regarding the function of brain areas has been gathered from case studies of individuals with brain injury or disease. Which of the following identifies a reason for this?

The independent variable in an experiment would inflict brain injury, which is unethical.

(28): Reuptake of a neurotransmitter refers to...

absorption of the neurotransmitter into the terminal buttons of the sending neuron

(13): Researchers find that there is a significant, positive correlation between the number of hours students sleep and their grades. The researchers would be justified in concluding that....

students who earn good grades tend to sleep more than those who do not

(27): The sequence of shifts in the electrical charge of a neuron is called

the action potential

(6): The process of converting incoming physical energy into a neural code that can be processed is called...

transduction