10. Research and Methods

population

a whole group of people

A researcher wants to find out if children have higher levels of aggression if they play violent video games. What is the dependent variable?

aggression

sample

a group of people selected from a population

A good sample _____.

guarantees your experiment has no problems

Why is a longitudinal study better than a cross-sectional study for examining how many years cancer survivors stay in remission?

Longitudinal studies allow you to study changes over time.

A researcher wants to study finches in their natural habitat. What type of qualitative research method is best to use?

observational

qualitative

research that explores the "why" and "how" of situations

variable

something that is likely to change

A hypothesis allows you to predict the potential outcome of your research experiment.

true

A researcher wants to find out how much anxiety 11th graders in American high schools experience while taking the ACT examination. Match the parts of the experiment to their appropriate terms.

ACT/independent variable anxiety/dependent variable 11th graders/sample American high schools/population

Which are examples of a population and its potential sample?

All Men: Heart Attack Survivors Family: Teenager Smokers: People Who Have Lung Cancer Orchestra: Woodwind Players

Why is a survey better than a case study to find out people's preferences for wearing certain shoe brands?

Case studies are only interested in values, not attitudes or opinions.

What is the purpose of using the Scientific Method?

all of the above

A/An _____ is a type of variable that is not accounted for in a research experiment.

confounding variable

scientific method

experimental method used to find fact and separate opinions

experimental group

group that receives the experimental treatment

control group

group used for comparison that doesn't receive experimental treatment

A researcher conducts an experiment to find out how many people experience "brain freeze" after eating a cold dessert. One group of people is given ice cream cones to eat, and the other group is given pie to eat. Which group is the experimental group?

people who are given ice cream to eat