Which of the following questions is best investigated by means of a survey? a. Is IQ related to grades? b. Are violent criminals genetically different from nonviolent criminals? c. Does extra sleep improve memory? d. What is the best study technique for AP® tests? e. Are students more likely to be politically liberal or conservative?

Why is an operational definition necessary when reporting research findings? a. An operational definition allows others to replicate the study. b. An operational definition provides more context and includes many examples of the concept described. c. An operational definition is easier to translate into multiple languages than a dictionary definition. d. An operational definition uses more scientific language than a dictionary definition. e. An operational definition is not necessary since a dictionary definition will work as well for replication.

Researchers are interested in finding out if winning Congressional candidates display more positive facial expressions than losing candidates. The researchers attend political debates and record how frequently each candidate displays positive facial expressions. Which research method are the researchers using? a. Random sample, b. Case study, c. Naturalistic observation, d. Survey, e. Interview.

When you are sleep deprived you have likely become less sensitive to which neurotransmitter helps to keep you alert during the day

In a linear programming problem, the function to be maximized (or minimized) is called the _______ __________ .

Researchers are interested in finding out if voters are more likely to vote for congressional candidates who have more pleasant facial expressions. Starting at a random point, the researchers contact every hundredth person on the voter list to ask about candidate facial expressions. Which method are the researchers using in choosing the people they will call? a. Random sample. b. Periodic sample. c. Biased sample. d. Survey. e. Operational definition.

True or False $\dfrac{d}{d x} \sinh x=\dfrac{1}{\sqrt{x^{2}+1}}$

Which of the following is an example of hindsight bias? a. Tom is certain that electric cars will represent 80 percent of vehicles in twenty years and only reads research studies that support his hypothesis. b. Liza underestimates how much time it will take her to finish writing her college application essays and as a result fails to meet an important deadline. c. Experts predicting world events with 80 percent confidence turned out to be correct less than 40 percent of the time. d. Marcy cannot recognize a definition on a flashcard. After turning the card over and viewing the term, she tells herself she knew what the answer was all along. e. Dr. Grace overestimates how effectively her new treatment method works because she fails to seek out any evidence refuting her theory.

The purpose of random assignment is to: a. allow participants in both the experimental and control groups to be exposed to the independent variable. b. ensure that every member of the population has an equal chance of being selected to participate in the research. c. eliminate the placebo effect. d. reduce potential confounding variables. e. generate operational definitions for the independent and dependent variables.

An individual with an exceptional memory is identified. She is capable of recalling major events, the weather, and what she did on any given date. What research method is being used if a psychologist conducts an in-depth investigation of this individual including questionnaires, brain scans, and memory tests? a. Naturalistic observation, b. Survey, c. Interview, d. Case study, e. Correlational method.

A researcher looking for gender differences in 3-yearolds observes a preschool class and records how many minutes children of each gender play with dolls. She then compares the two sets of numbers. What type of descriptive research is she conducting?

a. Case study

b. Experiment

c. Random sample method

d. Naturalistic observation

e. Survey

Identify an example of hindsight bias in the context of social psychology.

The tendency to exaggerate the correctness or accuracy of our beliefs and predictions is called: a. hindsight bias. b. overconfidence. c. critical thinking. d. skepticism. e. reliability.

We cannot assume that case studies always reveal general principles that apply to all of us. Why not?