Question 1

The Solomon four-group experimental design guarantees the maximum internal and external validity,ruling out many other rival hypotheses.

Accepted Answer

A) True 
 B)False

Question 2

Manipulation of independent variables in order to test causal relationships is unacceptable from a scientific point of view.

Accepted Answer

A) True 
 B)False

Question 3

Major threats to validity in a "pre-test & post-test with one experimental group only" are:

Accepted Answer

A) History,maturation,main testing,interactive testing,mortality. 
B) Statistical regression,maturation,main testing,interactive testing,mortality. 
C) Statistical regression,instrumentation,main testing,interactive testing,mortality. 
D) History,instrumentation,main testing,interactive testing,mortality. 
A) History,maturation,main testing,interactive testing,mortality. 
B) Statistical regression,maturation,main testing,interactive testing,mortality. 
C) Statistical regression,instrumentation,main testing,interactive testing,mortality. 
D) History,instrumentation,main testing,interactive testing,mortality.

Question 4

Whereas the randomized block design helps the experimenter to minimize the effects of one nuisance variable in evaluating the treatment effects,the Latin square design is very useful when two nuisance blocking factors are to be controlled.

Accepted Answer

A) True 
 B)False

Question 5

Main testing effects typically occur because participants want to be consistent.

Accepted Answer

A) True 
 B)False

Question 6

Interactive testing and selection effects may restrict the internal validity of our findings.

Accepted Answer

A) True 
 B)False

Question 7

Putting pressure on individuals to participate in experiments through coercion,or applying social pressure is considered unethical.

Accepted Answer

A) True 
 B)False

Question 8

It is not possible to set up control groups in field experiments.

Accepted Answer

A) True 
 B)False

Question 9

When a cause-and-effect relationship between an independent and a dependent variable of interest is to be clearly established,then all other variables that might contaminate or confound the relationship have to be tightly controlled.

Accepted Answer

A) True 
 B)False

Question 10

The manager of a Dairy Products Division wants to test the effects of the "buy one,get one free" sales promotion on the sale of the company-owned brand of packaged cheese,for a week.She records the sales of the packaged cheese during the previous 2 weeks to assess the effect of the promotion.However,on the very day that her sales promotion goes into effect,the Dairy Farmer's Association unexpectedly launches a multimedia advertisement on the benefits of consuming dairy products,especially cheese.The sales of all dairy products,including cheese,go up in all stores,including the one where the experiment had been in progress.Here,because of unexpected advertisement,one cannot be sure how much of the increase in sales of the cheese in question was due to the sales promotion and how much to the advertisement of the Dairy Farmers' Association! In this case,___________ have reduced the internal validity or the faith that can be placed on the conclusion that the sales promotion caused the increase in sales.

Accepted Answer

A) Main testing effects. 
B) Maturation effects. 
C) History effects. 
D) Instrumentation effects. 
A) Main testing effects. 
B) Maturation effects. 
C) History effects. 
D) Instrumentation effects.

Question 11

Mortality (the dropout of individuals from groups)is a problem for all experimental designs.

Accepted Answer

A) True 
 B)False

The Solomon four-group experimental design guarantees the maximum internal and external validity,ruling out many other rival hypotheses.

Manipulation of independent variables in order to test causal relationships is unacceptable from a scientific point of view.

Major threats to validity in a "pre-test & post-test with one experimental group only" are:

Whereas the randomized block design helps the experimenter to minimize the effects of one nuisance variable in evaluating the treatment effects,the Latin square design is very useful when two nuisance blocking factors are to be controlled.

Main testing effects typically occur because participants want to be consistent.

Interactive testing and selection effects may restrict the internal validity of our findings.

Putting pressure on individuals to participate in experiments through coercion,or applying social pressure is considered unethical.

It is not possible to set up control groups in field experiments.

When a cause-and-effect relationship between an independent and a dependent variable of interest is to be clearly established,then all other variables that might contaminate or confound the relationship have to be tightly controlled.

Mortality (the dropout of individuals from groups)is a problem for all experimental designs.

Introduction to Research

Scientific Investigation

The Research Process: the Broad Problem Area and Defining the Problem Statement

The Research Process: Theoretical Framework and Hypothesis Design

The Research Process: Elements of Research Design

Measurement of Variables: Operational Definition

Measurement: Scaling,reliability,validity

Data Collection Methods

Sampling

Quantitative Data Analysis

Quantitative Data Analysis Part 2: Hypothesis Testing

Qualitative Data Analysis

The Research Report

Filters

Exam 9: Experimental Designs

The Solomon four-group experimental design guarantees the maximum internal and external validity,ruling out many other rival hypotheses.

Manipulation of independent variables in order to test causal relationships is unacceptable from a scientific point of view.

Major threats to validity in a "pre-test & post-test with one experimental group only" are:

Whereas the randomized block design helps the experimenter to minimize the effects of one nuisance variable in evaluating the treatment effects,the Latin square design is very useful when two nuisance blocking factors are to be controlled.

Main testing effects typically occur because participants want to be consistent.

Interactive testing and selection effects may restrict the internal validity of our findings.

Putting pressure on individuals to participate in experiments through coercion,or applying social pressure is considered unethical.

It is not possible to set up control groups in field experiments.

When a cause-and-effect relationship between an independent and a dependent variable of interest is to be clearly established,then all other variables that might contaminate or confound the relationship have to be tightly controlled.

Mortality (the dropout of individuals from groups)is a problem for all experimental designs.

Introduction to Research

Scientific Investigation

The Research Process: the Broad Problem Area and Defining the Problem Statement

The Research Process: Theoretical Framework and Hypothesis Design

The Research Process: Elements of Research Design

Measurement of Variables: Operational Definition

Measurement: Scaling,reliability,validity

Data Collection Methods

Sampling

Quantitative Data Analysis

Quantitative Data Analysis Part 2: Hypothesis Testing

Qualitative Data Analysis

The Research Report

Filters