Concepts of Internal and External Validity are noted.

I define the concepts of internal validity and external validity and discuss why increasing one type decreases the other type.

Variables are discussed.

The present research investigated the effects of counterfactual thinking on subjects' accident related judgements. It was predicted that the availability of counterfactual alternatives for an accident would result in differential evaluation of incident related victims and perpetrators. The results of two studies strongly supported this prediction. Specifically, subjects awarded more financial compensation to the victim of an accident when it was preceded by exceptional rather than routine circumstances. Similarly, under these conditions the accident perpetrators were deemed to be more negligent in their behavior, and a harsher fine was leveled against them. Questions: 1) What is(are) t... click for more

Longer class periods are considered.

An educator wanted to test the effects of class period duration on the learning of junior high students. To keep work at a manageable level, the educator decided to change the morning class period duration from 45 minutes to 90 minutes so that material that was previously covered in 20 weeks was now covered in 10 weeks. No change was introduced to the afternoon class periods. In other words, the total amount of class time for any subject remained unchanged. When the experiment was over, the students were given tests on the morning and the afternoon material. Test scores for the morning material were much higher than the scores for the afternoon material. Thus, the educator concluded that the... click for more

Disadvantages/Advantages of using open ended questions with closed ended questions are listed.

This job compares the disadvantages and advantages of using open ended questions with using closed ended questions in survey research.

3 ways of sampling employees within an organization.

A researcher is interested in how attitudes toward on-site child-care facilities provided by employers are related to type of organization, employment status (full-time or part-time), and gender. Discuss 3 ways of sampling employees within an organization.