AP psych test

Lily scored 145 on an IQ test with a mean of 100 and standard deviation of 15. What is her z score?

+3

Jose hypothesizes that a new drug he has just invented will enhance mice's memories. He feeds the drug to the experimental group and gives the control group the placebo. He then times the mice as they learn to run through a maze. In order to know whether his hypothesis has been supported, Jose would need to use////

Inferential statistics

Olivia, a nursery school student, hypothesizes that boys have fights with finger paint more than girls do. She tests her hypothesis by causally watching the finger painting table for 3 days of nursery school. What method is she using?

Naturalistic Observation

which method should a psychology researcher use of she is interested in testing whether a specific reward in a classroom situation causes students better behavior?

Naturalistic Observation

you are told that a set of data includes one score that is .08. The SD for the set is 0. What are the mean, median, mode and range?

They are all .08

Talia collects survey data that indicate that students who spend more time preparing for the AP test tend to score better than other students. Jen can now conclude that...

a relationship exists between studying and exam grades

what is an example of Naturalistic observation

a social worker visits a family home and gives feedback on family interactions.

One of the principal differences between the ethical guidelines for human and animal research is:

animals can be placed at much greater physical risk than human participants can

Professor Ma wants to design a project studying emotional response to date rape. He advertises for participants in the school newspaper, informs them about the nature of the study, gets their consent, conducts an interview and debriefs them about the results when the experiment is over. If you were on the IRB, which ethical consideration would you most likely have the most concern about in professor Ma's study?

confidentiality

which descriptive statistic would a researcher use to describe how close a student's SAT score is to a school's average SAT score?

correlation coefficient

which of the following hypotheses would be most difficult to test experimentally

divorce makes children more independent

psychologists generally prefer the experimental method to other research methods because

experiments can show cause-effect relationships

explain how the concept of standard deviation is useful in distinguishing between sets of data

explains how the scores are dispersed and their variability

What is an example of random sampling?

having a computer generate a list of 100 high school students

"monday morning quarterbacks" rarely act surprised about the outcome of weekend football games. The tendency to believe they knew how the game would turn out is best explained by which psychological principle?

hindsight bias

when a distribution of scores is skewed, (no symmetry) which of the following is more representative measure of central tendency?

inference

if your raw score is 95, does this mean that your score is at the 95th percentile?

it means you scored better than 95% of the people that took it

theoretically, random assignment should eliminate

many confounding variables

Emma scores a perfect 100 on a test that everyone else fails. If we were to graph this distribution, would it be positive or negative skew?

positively skewed

Charlotte and Tamar are lab partners assigned to research who is friendlier, girls or boys. After conversing with their first 10 participants, they find that their friendliness ratings often differ. With which of the following should they be most concerned?

reliability

some psychologists consider Stanley Milgram's obedience studies to be unethical because of which ethical consideration?

risk of long-term harm

Vincenzo conducts an experiment to see whether fear makes mice run through mazes faster. He first selected a sample of 60 mice and then divided them into a control group and an experimental group. Which cannot be a confounding variable?

the population from which he selected his subjects

A researcher wants to conduct an experiment to determine if eating a cookie before class each day improves student grades. He uses 2 psychology classes for the experiment, providing daily cookies to one and nothing to the other. At the end of the semester, the researcher compares the final grades of the 2 classes. What is the independent variable?

the presence or the absence of the cookies