Exam 10: Experiments: Researching Cause and Effect

Random assignment of individuals into experimental groups ______ the experiment's level of sophistication.

"You must have a specific hypothesis before you can design an experiment." Support or refute that statement.

Factorial designs are experimental studies that manipulate two or more variables.

The focus of internal validity is on experimental design.

Which of the two research methods-surveys and experiments-is best situated to answer questions of causality? Explain why.

Experimenter bias can be reduced by using online experiments.

Identify and explain the conditions that need to be met before we can confidently state that changes in variable A cause changes in variable B.

In experimental design, attrition refers to ______.

Selection bias occurs when experimental groups are comparable.

In experimental design, diffusion refers to ______.

Which of the following is a threat to internal validity?

Spurious relationships are when the relationship between variables has been found and it is the relationship the researcher is seeking.

We can reduce or eliminate the influence of possibly relevant variables in an experiment by ______.

The biggest test of external validity is the ability to generalize to a broader population.

Selection bias occurs when experimental groups are not comparable.

Which of the following experimental designs has a control group?

To date, the Internet has been used to host surveys far more than experiments.

In experimental research, maturation means that people change over time.

A problem with the one-group pretest-posttest design is many other variables might be playing a part.

Random assignment assumes the probability of something occurring in one group is the same as the probability of it occurring in another group.