Exam 6: Independent Groups Designs

The goal of a random groups design experiment is to establish the independent variable as the cause of any differences in the dependent variable.The logic of accomplishing this involves

(Multiple Choice)

4.9/5

(81)

Question 41

Individual differences among participants in a random groups design are controlled by

(Multiple Choice)

4.9/5

(80)

Question 42

When participants begin an experiment but fail to complete it,the internal validity of the experiment can be threatened.Which of the following types of subject loss poses the most serious threat to internal validity?

(Multiple Choice)

4.8/5

(86)

Question 43

Briefly outline the steps involved in order to make an inference about the effect of an independent variable using null hypothesis significance testing; be sure to indicate the conditions in which an independent variable is judged to be nonsignificant and when it is statistically significant.

(Essay)

4.8/5

(75)

Question 44

When the three requirements for causal inference are met,an experiment is said to be

(Multiple Choice)

4.8/5

(70)

Question 45

A researcher conducted an experiment in which participants played either a violent or a nonviolent video game.After the game,the researcher measured hostile cognitions.The effect size,Cohen's d,for the difference in mean hostile cognition between the violent and nonviolent conditions was .83.Based on this,it is possible to state that the video game independent variable had a _______ effect on hostile cognition in this experiment.

(Multiple Choice)

4.8/5

(76)

Question 46

In what situation is it argued that external validity is irrelevant?

(Multiple Choice)

5.0/5

(93)

Question 47

A researcher tested whether exposure to images of very thin fashion models causes young women to be dissatisfied with their own body,compared to exposure to athletic body images or neutral (non-body)images.She randomly assigned 120 women from an introductory psychology course to one of three exposure conditions: very thin female images,athletic female images,or neutral images (e.g.,household objects).Each condition had 10 images,projected individually on a large screen.The young women participated in small groups.Each image was displayed for 1 minute,for a total of 10 minutes of exposure.After viewing each image,participants wrote for 30 seconds a description of the image (the participants were led to believe their memory was being tested).After viewing the images,the women completed a questionnaire about satisfaction with their body.Negative scores indicate body dissatisfaction and positive scores indicate satisfaction with their body.The mean scores for each condition were as follows: Describe the independent variable in this study.

(Essay)

5.0/5

(88)

Question 48

When observers have biases regarding what they expect participants' behavior to be like in an experiment,the observations may be influenced by

(Multiple Choice)

4.8/5

(71)

Question 49

In a study that investigates the effects of two different doses of a drug on memory performance,memory performance represent the variable and doses of the drug represent the variable.

(Multiple Choice)

4.9/5

(80)

Question 50

A researcher computes a .95 confidence interval for an experimental group to be 3.0 B 7.0,and computes a .95 confidence interval for a control group to be 0.0 B 4.0.Based on these confidence intervals,the researcher can state that

(Multiple Choice)

4.9/5

(71)

Question 51

Placebo control groups and double-blind procedures are typically used to control for

(Multiple Choice)

4.9/5

(84)

Question 52

After checking the data for errors and outliers,the next step in analyzing the data from a research study is to use

(Multiple Choice)

4.8/5

(78)

Question 53

A researcher plans to use a matched groups design to assess a treatment for increasing body weight of premature infants.The independent variable has two conditions,treatment and control.Eight pairs of premature infants are matched according to their body weight prior to manipulating the independent variable.In order to control for other potentially relevant characteristics of the participants,the researcher should

(Multiple Choice)

5.0/5

(72)

Question 54

Which of the following is not an advantage of using measures of effect size?

(Multiple Choice)

4.8/5

(93)

Question 55

In addition to creating groups of equal size,an advantage of block randomization is that it

(Multiple Choice)

4.8/5

(78)

Question 56

When conducting an experiment using the matched groups design,the preferred matching variable is

(Multiple Choice)

4.8/5

(85)

Question 57

One preventive step researchers can take when they suspect selective subject loss might occur in their experiment involves using a pretest to screen out participants who may drop out of the study.The disadvantage of this method is decreased

(Multiple Choice)

4.8/5

(83)

Question 58

When researchers use the multimethod approach they can reach comparable conclusions about a research question after using different methods to study it.Our confidence in these conclusions increases and the conclusions are said to have

(Multiple Choice)

4.8/5

(94)

Question 59

The statistical technique that is used to analyze the results of several independent experiments is called

(Multiple Choice)

4.8/5

(84)

Question 60

Showing 41 - 60 of 73

The goal of a random groups design experiment is to establish the independent variable as the cause of any differences in the dependent variable.The logic of accomplishing this involves

Individual differences among participants in a random groups design are controlled by

When participants begin an experiment but fail to complete it,the internal validity of the experiment can be threatened.Which of the following types of subject loss poses the most serious threat to internal validity?

Briefly outline the steps involved in order to make an inference about the effect of an independent variable using null hypothesis significance testing; be sure to indicate the conditions in which an independent variable is judged to be nonsignificant and when it is statistically significant.

When the three requirements for causal inference are met,an experiment is said to be

In what situation is it argued that external validity is irrelevant?

When observers have biases regarding what they expect participants' behavior to be like in an experiment,the observations may be influenced by

In a study that investigates the effects of two different doses of a drug on memory performance,memory performance represent the variable and doses of the drug represent the variable.

A researcher computes a .95 confidence interval for an experimental group to be 3.0 B 7.0,and computes a .95 confidence interval for a control group to be 0.0 B 4.0.Based on these confidence intervals,the researcher can state that

Placebo control groups and double-blind procedures are typically used to control for

After checking the data for errors and outliers,the next step in analyzing the data from a research study is to use

Which of the following is not an advantage of using measures of effect size?

In addition to creating groups of equal size,an advantage of block randomization is that it

When conducting an experiment using the matched groups design,the preferred matching variable is

One preventive step researchers can take when they suspect selective subject loss might occur in their experiment involves using a pretest to screen out participants who may drop out of the study.The disadvantage of this method is decreased

When researchers use the multimethod approach they can reach comparable conclusions about a research question after using different methods to study it.Our confidence in these conclusions increases and the conclusions are said to have

The statistical technique that is used to analyze the results of several independent experiments is called

Introduction

The Scientific Method

Ethical Issues in the Conduct of Psychological Research

Observation

Survey Research

Repeated Measures Designs

Complex Designs

Single-Case Research Designs

Quasi-Experimental Designs and Program Evaluation

Data Analysis and Interpretation: Part Idescribing Data, confidence Intervals, correlation

Data Analysis and Interpretation: Part Iitests of Statistical Significance and the Analysis Story

Communication in Psychology

Filters

Exam 6: Independent Groups Designs

The goal of a random groups design experiment is to establish the independent variable as the cause of any differences in the dependent variable.The logic of accomplishing this involves

Individual differences among participants in a random groups design are controlled by

When participants begin an experiment but fail to complete it,the internal validity of the experiment can be threatened.Which of the following types of subject loss poses the most serious threat to internal validity?

Briefly outline the steps involved in order to make an inference about the effect of an independent variable using null hypothesis significance testing; be sure to indicate the conditions in which an independent variable is judged to be nonsignificant and when it is statistically significant.

When the three requirements for causal inference are met,an experiment is said to be

In what situation is it argued that external validity is irrelevant?

When observers have biases regarding what they expect participants' behavior to be like in an experiment,the observations may be influenced by

In a study that investigates the effects of two different doses of a drug on memory performance,memory performance represent the ____ variable and doses of the drug represent the ____ variable.

A researcher computes a .95 confidence interval for an experimental group to be 3.0 B 7.0,and computes a .95 confidence interval for a control group to be 0.0 B 4.0.Based on these confidence intervals,the researcher can state that

Placebo control groups and double-blind procedures are typically used to control for

After checking the data for errors and outliers,the next step in analyzing the data from a research study is to use

Which of the following is not an advantage of using measures of effect size?

In addition to creating groups of equal size,an advantage of block randomization is that it

When conducting an experiment using the matched groups design,the preferred matching variable is

One preventive step researchers can take when they suspect selective subject loss might occur in their experiment involves using a pretest to screen out participants who may drop out of the study.The disadvantage of this method is decreased

When researchers use the multimethod approach they can reach comparable conclusions about a research question after using different methods to study it.Our confidence in these conclusions increases and the conclusions are said to have

The statistical technique that is used to analyze the results of several independent experiments is called

Introduction

The Scientific Method

Ethical Issues in the Conduct of Psychological Research

Observation

Survey Research

Repeated Measures Designs

Complex Designs

Single-Case Research Designs

Quasi-Experimental Designs and Program Evaluation

Data Analysis and Interpretation: Part Idescribing Data, confidence Intervals, correlation

Data Analysis and Interpretation: Part Iitests of Statistical Significance and the Analysis Story

Communication in Psychology

Filters

In a study that investigates the effects of two different doses of a drug on memory performance,memory performance represent the variable and doses of the drug represent the variable.