# Construction, Reliability, & Validity Of Testing Methods

This is an MCQ-based quiz for GRE on the topic of Construction, Reliability, & Validity Of Testing Methods.

This includes Counterbalancing method, Independent measures, Repeated measures, Separate variables, and Independent variables.

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Dr. Crawford believes she has invented a pill to help with student memorization. For a trial experiment, she gathered two groups of twenty students. She gave the twenty students in Group A the “smart pill”, and the twenty students in Group B a sugar pill. After waiting five minutes, both groups of students were given a list of forty words, and were instructed to memorize the entire list in any order. The students were given five minutes to memorize the list. The students were then asked to verbally recite all of the words they could remember in any order within three minutes. Group A recited an average of fifteen words, while Group B recited an average of ten words. In this experiment, what is the independent variable?

Five minutes given to study the list Group A versus Group B Reciting the list in any order The number of words recited Students' receipt of the smart pill vs. the sugar pill

Dr. Crawford believes she has invented a pill to help with student memorization. For a trial experiment, she gathered two groups of twenty students. She gave the twenty students in Group A the “smart pill”, and the twenty students in Group B a sugar pill. After waiting five minutes, both groups of students were given a list of forty words, and were instructed to memorize the entire list in any order. The students were given five minutes to memorize the list. The students were then asked to verbally recite all of the words they could remember in any order within three minutes. Group A recited an average of fifteen words, while Group B recited an average of ten words. What sort of experimental design is this?

Counterbalancing method Independent variables Separate variables Independent measures Repeated measures

Dr. Crawford believes she has invented a pill to help with student memorization. For a trial experiment, she gathered two groups of twenty students. She gave the twenty students in Group A the “smart pill”, and the twenty students in Group B a sugar pill. After waiting five minutes, both groups of students were given a list of forty words, and were instructed to memorize the entire list in any order. The students were given five minutes to memorize the list. The students were then asked to verbally recite all of the words they could remember in any order within three minutes. Group A recited an average of fifteen words, while Group B recited an average of ten words. What is Dr. Smart’s null hypothesis?

The smart pill works. There is a significant difference between the number of correct words recited by Group A and Group B. The number of the words recited by Group A will be greater than or equal to the number of words recited by Group B. The number of the words recited by Group B will be less than the number of words recited by Group A. There is no significant difference between the number of correct words recited by Group A and Group B.

Which of the following is not a common difficulty associated with the double-blind study protocol?

Researchers may have to settle for a less powerful treatment effect, as a more powerful one would Double-blind studies make subsequent meta-analysis of the results more difficult, as it becomes harder to separate the results of the study from the expectations of the hypothesis If a medical treatment is discovered to be very effective, it might be unethical to continue withholding treatment from the control group Keeping researchers blind to the groupings usually involves significant expenses or time investment that studies often cannot afford Clinical protocols may make a double-blind methodology impractical (i.e. in treatment effects involving invasive surgery vs. no invasive surgery, where scars would be visible)

Melanie is a regular customer at a gun range, where she shoots paper targets with three different types of guns: a rifle, a pistol, and a shotgun. When firing the rifle, Melanie notices that her shots nearly always hit the target, but are evenly spread out throughout the paper"s surface. When firing the pistol, Melanie"s shots are all grouped within a few inches of each other, with the group overlaying the bull’s-eye on the target. When firing the shotgun, Melanie"s shots are also tightly grouped, but the groups of shots are all slightly above the bull’s-eye. Which of the following terms is best describes Melanie"s performance with the shotgun compared to her performance with the pistol?

None of these Melanie is not reliable or valid with the shotgun, but is valid with the pistol Melanie is more valid with the pistol, but equally reliable with both pistol and shotgun Melanie is more reliable with the pistol than the shotgun, but more valid with the shotgun than the pistol Melanie is equally valid with pistol and shotgun, and more reliable with the pistol

A sample of players on a baseball team are chosen to be drug tested. Which of the following methods could league officials use to ensure that the players are randomly selected?

Choosing to test all of the pitchers on the team Asking for volunteers and then testing those players Choosing to test every player with over ten home runs Choosing to test every fifth player on an alphabetically-listed roster Choosing to test every player over thirty years of age

Dana is participating in a study that asks her to press a red button every time the computer screen in front of her shows a letter X. The computer screen shows a letter "T." Dana presses the red button. Dana"s response is considered to be which of the following?

False alarm None of these Hit Miss Correct rejection

Dr. Crawford believes she has invented a pill to help with student memorization. For a trial experiment, she gathered two groups of twenty students. She gave the twenty students in Group A the “smart pill”, and the twenty students in Group B a sugar pill. After waiting five minutes, both groups of students were given a list of forty words, and were instructed to memorize the entire list in any order. The students were given five minutes to memorize the list. The students were then asked to verbally recite all of the words they could remember in any order within three minutes. Group A recited an average of fifteen words, while Group B recited an average of ten words. In this experiment, what is the dependent variable?

Number of words recited correctly Reciting the list in any order Students' receipt of the smart pill vs. the sugar pill Group A vs. Group B Five minutes to study the list

Dr. Crawford believes she has invented a pill to help with student memorization. For a trial experiment, she gathered two groups of twenty students. She gave the twenty students in Group A the “smart pill”, and the twenty students in Group B a sugar pill. After waiting five minutes, both groups of students were given a list of forty words, and were instructed to memorize the entire list in any order. The students were given five minutes to memorize the list. The students were then asked to verbally recite all of the words they could remember in any order within three minutes.
Group A recited an average of fifteen words, while Group B recited an average of ten words.

Group B is the _________.

Tester group

Experimental group

Placebo group

Control group

Independent variable

Dr. Crawford believes she has invented a pill to help with student memorization. For a trial experiment, she gathered two groups of twenty students. She gave the twenty students in Group A the “smart pill”, and the twenty students in Group B a sugar pill. After waiting five minutes, both groups of students were given a list of forty words, and were instructed to memorize the entire list in any order. The students were given five minutes to memorize the list. The students were then asked to verbally recite all of the words they could remember in any order within three minutes.
Group A recited an average of fifteen words, while Group B recited an average of ten words.

Group A is the __________.

Tester group

Control group

Independent variable

Experimental group

Placebo group

Quiz/Test Summary
Title: Construction, Reliability, & Validity Of Testing Methods
Questions: 10
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