Types of Research Review

What is the benefit of an operational definition?

• 1. It tells us how the case study evolved

• 1. It allows us to replicate the experiment

• 1. It shows us predictions to study further

A researcher wants to know if daily exercise causes an improvement in memory. Which type of research method must be used to study this causal relationship?

• case study

• naturalistic observation

• survey

• experiment

The dependent variable

• is what's manipulated

• is what's measured

The independent variable is

• what's measured

• what's manipulated

To be a true experiment, it must use

• random assignment

• case studies

• predictions

When neither the experimenter or the subjects know who is in the control group or the experimental group, it's called a _________ procedure/study.

• causal

• single blind

• double blind

An experiment is testing whether ADHD medication helps people focus or not, one group receives medication and the other group does not. What is the independent variable?

• ADHD medication

• focusing

In the experiment testing whether ADHD medication helps people focus or not. What is the dependent variable?

• ADHD medication

• focusing

In a study testing a new headache medication, one group receives the actual drug while another group receives a sugar pill but believes it’s the real drug. The sugar pill group also reports fewer headaches. This is an example of what?

• placebo effect

• experimenter bias

• confounding variable

• random assignment

A researcher wants to test if listening to classical music before bed improves sleep quality. Group A listens to 30 minutes of classical music before sleeping. Group B goes to bed without listening to any music. Which is the experimental group?

• Group A

• Group B

• Both groups

• Neither group