Exam 8: Experimental Research

Internal validity is not an issue with quasi-experiments because there are experimental and control groups.

Discuss the issue of internal validity and experiments.Which types of experimental designs are best suited to address the issue of internal validity? How so?

Field experiments typically have better generalizability because they occur outside an official laboratory setting.On the other hand,there are disadvantages,which include which of the following?

In some instances,it is impossible to measure a condition before the experiment is conducted.In this situation,one can employ a research design known as a

One advantage of experimental designs in laboratory settings is that you know with some confidence that only one group has been exposed to the treatment introduced by the researcher.

The Solomon four-group design includes three experimental groups and one control group.

One advantage of pretest-posttest experiments is the ability to separate the effects of the independent variable from maturation.

In posttest only quasi-experimental designs,the major threat to internal validity is that it is virtually impossible to conclude that changes are the result of the manipulation of the independent variable alone.

An experimental design has the advantage over non-experimental approaches in determining the order in which events occur and

In a classic experimental design,the independent variable can be manipulated,controlled,introduced,or it can occur naturally.

In matching,assignment to experimental and control groups is done by

In a classic experimental design,it is important to take measures of control and experimental groups

Many research studies are provoked by an individual's interest in and passion about an area of investigation.Think about an issue that you care deeply about and devise a research study that would involve an experimental or quasi- experimental design.How would you design a research approach that would minimize the effect of experimenter expectations or testing effects? What steps would you take?

____________validity refers to the agreement between a study's conclusion and what is actually true.

A Solomon four-group design is useful for addressing issues of internal validity.

A threat to internal validity due to something that occurs and affects the dependent variable during an experiment,but which is unplanned and outside the control of the experimenter is known as

Which of the following is not a criteria of a causal relationship?

Which of the following is missing in a quasi-experimental design?

Experimental study designs are best suited forresearch.

The focal research by Chris Caldeira is a field experiment because the experiment is being held in a regular classroom.