Types of studies and sampling review

A is a great way to get information quickly, but it is not the most valid because people don’t always tell the truth or know what the truth is to report.  Also, the sample is skewed because you only get the answers of the participants who choose to follow through.

• Case study

• Naturalistic Observation

• Survey

• Experiment

Cynthia observed, interviewed and did a few tests on 3 people with bipolar disorder over a period of 2 weeks in order to better understand the uniqueness of the manic phase. This is an example of

• Case Study

• Naturalistic Observation

• Experiment

• Correlational Study

• Meta-analysis

Interested in the link between social connectedness and self-esteem among elementary school students, Dr. Hines and her team went into 10 elementary schools where researchers counted the number of social interactions children had at recess over a period of 5 days and the words they used to describe their day to their parents (a writing exercise that students in this district go through every day).  

• Case Study

• Naturalistic Observation

• Correlational Study

• Experiment

• Meta-analysis

To test a new drug for anxiety, Dr. Juarez gave the medication to a group of 100 people with a diagnosis of generalized anxiety disorder and to 100 other people with a diagnosis of generalized anxiety disorder, he gave a placebo.  He compared the average anxiety of the groups after 6 months.

• Case Study

• Naturalistic Observation

• Correlational study

• Experiment

• Meta-analysis

A researcher usually asks a question or makes a hypothesis about a whole ________.   But, because it is not possible to test every single person they are hypothesizing about, they only test a smaller group of people called their ________.  The only way that results from the sample can be generalized to draw conclusions about the population is if the sample is ________ of the population.

• population; sample; representative

• sample; population; representative

• population; sample; a subset

• sample; population; a subset

How do you get a representative sample from your population?

• random assignment

• sampling

• random selection

• using an experiment

Karima wants to know whether or not teenagers in the United States are more attracted to Doctors without Borders when they learn about the medical conditions in Somalia than before they knew about these conditions.  She asks 100 of them to be in her experiment.

The 100 students in Karima’s study are the

• population

• sample

• random selection

• random assignment

Karima wants to know whether or not teenagers in the United States are more attracted to Doctors without Borders when they learn about the medical conditions in Somalia than before they knew about these conditions.  She asks 100 of them to be in her experiment.

Teenagers in the United States are the

• population

• sample

• random selection

• random assignment

Karima wants to know whether or not teenagers in the United States are more attracted to Doctors without Borders when they learn about the medical conditions in Somalia than before they knew about these conditions.  She asks 100 of them to be in her experiment.

Karima could make her sample representative through

• population

• sample

• random selection

• random assignment

Sarah is interested in how much exercise can reduce the risk of heart disease. Many studies have been done on this, so Sarah combines the effect sizes from all of the studies into her comprehensive study. What research method is Sarah using?

• Correlational Study

• Naturalistic Observation

• Case Study

• Experiment

• Meta-analysis