A researcher examines the effect of the physical attractiveness of a driver involved in an automobile accident (unattractive, average, or attractive) and the severity of damage caused ($500, $1,500, or $2,500) on judgments of responsibility assigned to the driver. Which of the following represents the factorial design?

Phillipe, a researcher, examined the effect of lighting on learning. Randomly selected participants were asked to learn the same chapter using either a 100-watt or a 125-watt bulb. He found no difference between the learning capacities of the two groups. The nonsignificant results may have occurred because of

A researcher designs an experiment in which the following variables are manipulated: temperature (low or high), illumination level (low or high), and time of testing (day or night). For a repeated measures design, how many participants would the researcher require in order to have 10 participants per condition?

In a shopping mall, a marketing researcher asks customers if they would prefer soda in a bottle or in a can. Their responses would be an example of a________ measure.

Vijay, a researcher, attempts to test the effect of the environment in an examination hall on a student’s performance; however, he gives students question papers that differ in complexity and subject matter. His results will not be reliable because the complexity and subject matter of the examination are

Kalim wants to study the effectiveness of a new teaching method. He includes two teachers of a class in the experiment. One teacher uses the new method of teaching, and the other teacher uses the old method. At the end of the semester, he finds that students who were taught in the new way had higher grades than students taught in the old way. What is the confounding variable?

The head of the psychology department in a university is interested in finding the attitudes of psychology students toward implementing an internship as a requirement for completion of the degree. She obtains a list of all students who are psychology majors, randomly selects 100 students from the list, and surveys those who are selected. What type of sampling technique has she employed?

Which of the following is LEAST likely to be true of a 2 × 2 factorial design?

Students are asked to evaluate the food provided in the university cafeteria on 7-point scales with bipolar adjectives such as poor–good and inexpensive–expensive. What type of scales do these measures represent?

Ralph, a researcher, employs a confederate to push into a queue at a grocery store checkout counter in front of a person who is second and then another person who is ninth in line. He then records the number of verbal responses toward the confederate at each instance, as a measure of aggression. The manipulation employed in this scenario is an example of a________ manipulation.