Exam 7: Control

Dr. Rankin ran an experiment investigating the effects of packaging color on consumer preference for the pudding in the package. Each participant in the experiment tasted the same pudding from three differently colored containers and was asked to rate how much they liked each one. Dr. Rankin used a

The two types of replication are

Systematic replication of an experiment tests

Is it true that every experiment must have a control group that does not experience the independent variable?

A nuisance variable is

Subjects may be used as their own control when

Control is defined as

For practical reasons, many psychological experiments on humans

Discuss two methods by which experimental control over extraneous variables can be increased.

Replication is

Sometimes a nonexperimental study has more _______ validity than a corresponding laboratory study, despite the more limited control

Between-subjects experiments

If you cannot give your participants a pre-test before assigning them to conditions

Statistical control refers to a means of

Failing to confirm a hypothesis

Failing to confirm a hypothesis

The purpose of random assignment of subjects to conditions is

In a certain experiment, each participant receives Condition A which contains the treatment) and Condition B which does not contain the treatment) four times in a random order. This type of experiment is called a _______________ experiment, and Condition A is a _________________ condition

What is the main purpose of matching?

Laboratory research, as opposed to field research, is