Exam 6: Validity

When a researcher asks the question, "Have changes in some developmental process within the subjects paralleled the treatment effects?", she is concerned with which one of the following potential threats to internal validity?

Because the test itself is not a perfect measure a particular construct, all measurements contain some level of

An experiment in which extraneous variables are controlled is said to be

A loose connection between theory and method threatens _________ validity.

Define the concepts internal and external validity. Discuss why we say that for some experiments an attempt at increasing one type tends to jeopardize the other type.

A participant's ideas and expectations about an experiment give rise to

External validity refers to the extent to which

If you were studying the effects of success and failure on feelings of depression and all of the participants experienced the failure condition on a rainy Monday and the success condition on a sunny Wednesday, ______ might be a threat to internal validity.

The threat of confounding is particularly serious in research using

When statistical tests are used improperly, a lack of ____________validity is reflected

Automating experiments so that they are run by computer is a strategy for overcoming which threat to validity?

List at least 4 threats to internal validity and explain what they mean.

An experiment in which the independent variable really caused the change in the dependent variable is said to be high in _________ validity.

Regression to the mean can occur when

If a researcher runs an ad in a paper in order to recruit subjects, and places the first 10 people who call in one group and the next 10 people who call in another group, what sort of threat to internal validity has been introduced?

Jolene just got a 17 out of 100 on a psychology test. Her friend Melba tries to cheer her up by pointing out that she should perform better on the next test, simply due to_____

Loss of subjects during the course of a research project usually introduces bias because

Because the theoretical concept of aggression in cats can be operationally defined as either hunting or fighting, problems with ________ can potentially creep into experiments.

A researcher that is exploring gender differences is testing

Which one of the following is not a threat to the internal validity of an experiment?