Exam 10: Complex Experimental Designs

Dunn et al.(2005)conducted an experiment of the relationship between exercise and depression.Participants were randomly assigned to either a low or a high intensity workout regime.Some were assigned to work out 3 days a week,while other participants worked out 5 days a week.Identify the independent variable(s)in this study.

In a study with a 2 × 2 × 2 × 2 factorial design,it can be inferred that there are:

A simple main effect analysis examines:

Individuals with work experience and those without work experience are given identical resumes of a male or female applicant and asked to indicate the likelihood that they would hire the individual.The PV in this design is:

An educational researcher examines the effect of speaker credibility on attitude change in university and community college students.The PV in this design is the:

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

The simplest factorial design is that which has:

A researcher designs an experiment by manipulating room temperature (cold,warm,or hot);noise level (quiet or loud);and room color (pink,blue,or black).Identify the possible number of main effects.

Which of the following best describes a mixed factorial design?

A researcher had young or middle age participants watch a PG-13 or an R-rated film.After viewing the film,the participants rated the amount of violence in the films-the higher the assigned rating,the more violent the film.The mean results in the four conditions were: Which of the following statements is least likely to be true?

How many conditions and possible interactions are there in a study with a 2 × 2 × 2 factorial design?

A researcher examined judgments of responsibility for an automobile accident by manipulating the type of injuries received (none,mild,or severe)and the time of the accident (7 a.m. ,12 p.m. ,6 p.m. ,or 3 a.m. ).How many main effects are possible in this study?

A researcher studies the effect of interpersonal distance (near,far)and personality type (introvert,extrovert)on feelings of anxiety.The researcher has used a(n)_____ design.

The Smith and Ellsworth (1987)study on eyewitness testimony illustrates a factorial design with different individuals in each of the conditions.This design is best classified as a _____ design.

In a study examining the effect of room illumination (low,medium,high)and room temperature (cold,warm,hot)on test performance,how many interactions are possible?

Participants were asked to read two poems that were written by a male or female author.They were told that one of the authors was a student majoring in English and the other an English professor.The participants rated the poem written by the professor as being of higher quality than the poem written by the student.This indicates:

In a two-way analysis of variance,a researcher tests for the significance of:

A researcher attempts to study the effect of fear arousal on attitude change.One group experiences no fear while the other group experiences a very high level of fear.Results show no difference in the amount of attitude change in the two groups.Which of the following should have been used in the research?

A researcher states that "anxiety decreases performance irrespective of the participants' motivation levels." This means that there is a(n)_____.

With a(n)_____,the results are analyzed as if you had separate experiments at each level of the other independent variable.