Exam 2: The Tools of Psychological Research

In an experimental study, the group of participants who are not exposed to the experimental treatment is:

A commonly used measure of variability is the ____________________, which measures the difference between the largest and smallest score in a data set.

Which type of study would control for both participant expectations and expectations on the part of the investigator?

Which of the following is the maximum value for a correlation coefficient?

The test grade Jim receives in Professor Evans' class is determined by how well he does on the test in relation to the scores received by the rest of the class.Professor Evans is using the grading method known as:

The measure of central tendency that is most sensitive to extreme scores within the data set is:

When a student's grade is determined by the percentage of items correct on a test, this is called:

Dr.Brown designs an experiment to test the effects of a new memory drug.Half the participants will receive a placebo and half will receive the actual drug, but neither the participants nor the researchers administering the drug will be informed which is the placebo.Dr.Brown has designed:

A placebo can be used:

As Behavior A decreases, Behavior B decreases by an equal amount.This pattern reflects:

When the results of a scientific observation are representative of real life, the results:

Operational definitions:

After a research study, a participant may receive ____________________, which is intended to clear up any misunderstandings that the person might have about the research and to explain in detail why certain procedures were used.

Some experiments use a(n) ____________________ procedure in which neither the participants nor the researchers are informed about which group (experimental or control) a participant is in.

Naturalistic observation, case studies, and surveys are all examples of:

When everyone in the target population had an equal likelihood of being selected to take part in a survey, the researcher has selected a:

Random assignment:

Of the following, the correlation coefficient that indicates the strongest relationship between the two variables being measured is:

If a placebo is used, researchers assume that differences in group performance are not due to:

Pamela signed up for a study that would test the effects of a new experimental drug.She knew that only half the participants would actually receive the drug, while the rest would receive a placebo.However, Pamela is unsure whether the drug she is receiving is real.Pamela is taking part in: