Project #92121 - 10 questions Research

A researcher decides to study the effects of dance therapy on self-esteem in emotionally disturbed adolescents. One residential program consents to try the dance therapy treatment, whereas another similar program refuses to try dance therapy, but allows the researcher to measure self-esteem. Self-esteem is measured before and after treatment in both groups. This is an example of a __________ design.


A. multilevel, pretest-posttest control-group


B. pretest-posttest, natural control-group


C. randomized, pretest-posttest, control-group


D. multilevel, randomized, pretest-posttest, between-subjects





If the p-value for an F-test is less than the alpha level chosen in the experimental design phase, you should __________ significant difference between groups.


A. reject the null hypothesis and conclude that there is a


B. reject the null hypothesis and conclude that there is no


C. accept the null hypothesis and conclude that there is a


D. accept the null hypothesis and conclude that there is no



Laczniak and Muehling (1993) suggest that manipulations checks should be considered:


A. even before the pilot or pretesting.


B. after theory tests.


C. once you have collected data for the main experiment.


D. after the final development of your manipulations.




In terms of the F-test, the value of F is increased by __________ variance.


A. increasing experimental variance and/or decreasing error


B. decreasing experimental variance and/or increasing error


C. increasing error


D. decreasing error variance and/or decreasing experimental



The basic comparison in single-subject experimental designs is:


A. between the participant's responses and those of a matched control.


B. between the same participant's own pretreatment and post-treatment responses.


C. between the post-treatment responses of the participant and those of a matched control.


D. a comparison between the real and the ideal responses.



Which of the following is NOT a characteristic of a within-subjects design?


A. Each participant is tested under each experimental condition.


B. The scores in each condition are correlated with each other.


C. Each participant is measured only once on the dependent variable.


D. The critical comparison is the difference between correlated groups on the dependent variable.




Single-subject designs are sometimes preferable to between-subjects group comparison designs because:


A. independent variables cannot be manipulated in between-subjects group comparison designs.


B. single-subject designs have greater external validity.


C. important information about the way individuals perform is lost when summarizing group information.


D. None of the above (single-subject designs are never preferable to between-subjects designs)





In within-subjects designs, each participant:


A. is measured at least five times.


B. serves as his or her own control.


C. is measured only once.


D. is randomly assigned to one of two conditions.


Question 38 of 40

2.5 Points

Single-subject experimental designs are variations of within-subject designs because the same:


A. participant is exposed to all manipulations.



B. statistical test is used to analyze both designs.



C. dependent measures are of interest in both types of design.



D. independent variables are investigated in both types of design.









Which of the following is NOT an example of a common usage of single-subject designs?


A. Determining whether a particular client is improving when a particular treatment is applied


B. Determining if a specific child's academic achievement improves with a specific teaching method


C. Determining if an antismoking campaign is having an effect at a specific school


D. Determining which particular dose of a drug is the most effective for a specific patient




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Due By (Pacific Time) 11/09/2015 12:00 am
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