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Quiz on Research Design and Statistics, created by Ani Av on 17/06/2015.

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Research Design and Statistics

Question 1 of 18

1

An experiment is conducted on the effects of consuming caffeine on how well a student performs on a maths test.

What is the independent variable?
What is the dependent variable?

Select one of the following:

  • A group of students who drink caffeine; caffeine

  • Consumption of caffeine; score on the math test

  • Score on the math test; consumption of caffeine

  • These variables need not be defined since this is not an actual experiment

Explanation

Question 2 of 18

1

An experiment is conducted on the effects of consuming caffeine on how well a student performs on a maths test.

Which is the experimental group?
Which is the control group?

The group that:

Select one of the following:

  • Consumes caffeine; does not consume caffeine

  • Does not consume caffeine; consumes caffeine

  • Receives the highest test score; receives the lowest score

  • Receives the highest test score; administers the experiment

Explanation

Question 3 of 18

1

The ____________ variable is the variable hypothesised to affect the _______________ variable.

Select one of the following:

  • Experimental; control

  • Control; experimental

  • Independent; dependent

  • Dependent; independent

Explanation

Question 4 of 18

1

In an experiment, the experimental and control groups should be very similar except for ______________________.

Select one of the following:

  • the number of subjects that each contains.

  • the way the subjects were chosen for each group.

  • the different hypotheses used.

  • the different treatment that they receive in regard to the independent variable

Explanation

Question 5 of 18

1

The first step completed before conducting an experiment involves

Select one of the following:

  • measuring the independent variable to make sure it is accurate.

  • formulating a hypothesis and selecting subjects.

  • randomly assigning variables to a group.

  • manipulating the independent variable

Explanation

Question 6 of 18

1

In an experiment, subjects should ___________ groups before the ____________________ variable is manipulated.

Select one of the following:

  • choose their own; dependent

  • choose their own; independent

  • be randomly assigned to; dependent

  • be randomly assigned to; independent

Explanation

Question 7 of 18

1

Which of the following lists the steps involved in conducting an experiment in the correct order?

Select one of the following:

  • manipulate independent variable, measure independent variable, formulate hypothesis

  • randomly assign subjects to groups, manipulate independent variable, measure dependent variable

  • formulate hypothesis, manipulate dependent variable, measure independent variable

  • none of these options are correct

Explanation

Question 8 of 18

1

A group of athletes run a mile on two different days. One day, the athletes eat a nutritional bar immediately before running the mile. They do not eat this bar before running the mile on the second day. The control group in this experiment is

Select one of the following:

  • there is no control group in the experiment

  • the same group of runner

  • the nutritional bar

  • the day the runners had the slowest time

Explanation

Question 9 of 18

1

Two groups of students in an experiment were allowed to study for different amounts of time (15 minutes vs. 2 hours) and to take a different format (open book vs. closed book) in order to determine which condition led to the highest score.

Which statement is true?

Select one of the following:

  • This was technically not an experiment.

  • This was an experiment, but the dependent variable was not defined.

  • There were two independent variables and one dependent variable in this experiment.

  • There was one independent variable and two dependent variables in this experiment.

Explanation

Question 10 of 18

1

Students took a test in one of two conditions - either in a quiet room, or in a room with very loud music. At the end of the experiment, in addition to looking at their test scores, researchers also collected students' ratings of anxiety and self-esteem. This experiment included _______ independent variable(s) and _______ dependent variable(s).

Select one of the following:

  • One; three

  • One; two

  • Three; one

  • No; three

Explanation

Question 11 of 18

1

A clinical psychologist uses the Beck Depression Inventory to determine whether taking a new antidepressant medication reduces the number of depressive symptoms shown by patients suffering from bipolar disorder. Comparisons are made between subjects who are given the antidepressant daily and subjects who are given the pill with no real medication.

Which is the independent variable?

Select one of the following:

  • A new antidepressant medication

  • Number of depressive symptoms

  • Subjects who are given antidepressant medication

  • Subjects who were given pills with no real medication

Explanation

Question 12 of 18

1

A clinical psychologist uses the Beck Depression Inventory to determine whether taking a new antidepressant medication reduces the number of symptoms shown by patients suffering from bipolar disorder. Comparisons are made between subjects who are given the antidepressant daily and subjects who are given pills with no real medication.

Which is the dependent variable?

Select one of the following:

  • A new antidepressant medication

  • Number of depressive symptoms

  • Subjects who are given the antidepressant medication

  • Subjects who are given pills with no real medication

Explanation

Question 13 of 18

1

A clinical psychologist uses the Beck Depression Inventory to determine whether taking a new antidepressant medication reduces the number of symptoms shown by patients suffering from bipolar disorder. Comparisons are made between subjects who are given the antidepressant daily and subjects who are given pills with no real medication.

Which is the experimental group?

Select one of the following:

  • A new antidepressant medication

  • Number of depressive symptoms

  • Subjects who are given the antidepressant medication

  • Subjects who are given pills with no real medication

Explanation

Question 14 of 18

1

A clinical psychologist uses the Beck Depression Inventory to determine whether taking a new antidepressant medication reduces the number of symptoms shown by patients suffering from bipolar disorder. Comparisons are made between subjects who are given the antidepressant daily and subjects who are given pills with no real medication.

Which is the control group?

Select one of the following:

  • A new antidepressant medication

  • Number of depressive symptoms

  • Subjects who are given antidepressant medication

  • Subjects who are given pills with no real medication

Explanation

Question 15 of 18

1

An educational psychologist wants to see whether test-wiseness training leads to improved grades in a sample of adult students who are returning to college. She compares subjects who are assigned to a test-wiseness seminar against subjects who were not told about the seminar.

Which is the independent variable?

Select one of the following:

  • Test-wiseness training

  • Grades

  • Subjects who are assigned to a test-wiseness seminar

  • Subjects who were not told about the seminar

Explanation

Question 16 of 18

1

An educational psychologist wants to see whether test-wiseness training leads to improved grades in a sample of adult students who are returning to college. She compares subjects who are assigned to a test-wiseness seminar against subjects who were not told about the seminar.

Which is the dependent variable?

Select one of the following:

  • Test-wiseness training

  • Grades

  • Subjects who are assigned to a test-wiseness seminar

  • Subjects who were not told about the seminar

Explanation

Question 17 of 18

1

An educational psychologist wants to see whether test-wiseness training leads to improved grades in a sample of adult students who are returning to college. She compares subjects who are assigned to a test-wiseness seminar against subjects who were not told about the seminar.

Which is the experimental group?

Select one of the following:

  • Test-wiseness training

  • Grades

  • Subjects who are assigned to a test-wiseness seminar

  • Subjects who were not told about the seminar

Explanation

Question 18 of 18

1

An educational psychologist wants to see whether test-wiseness training leads to improved grades in a sample of adult students who are returning to college. She compares subjects who are assigned to a test-wiseness seminar against subjects who were not told about the seminar.

Which is the control group?

Select one of the following:

  • Test-wiseness training

  • Grades

  • Subjects who are assigned to a test-wiseness seminar

  • Subjects who were not told about the seminar

Explanation

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