Research Methods for the Behavioral Sciences
5th Edition
ISBN: 9780357231913
Author: Frederick J Gravetter; Lori-Ann B. Forzano
Publisher: Cengage Limited
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Textbook Question
Chapter 7.2, Problem 4LO
Explain why manipulation of an independent variable is a critical component of an experiment.
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Chapter 7 Solutions
Research Methods for the Behavioral Sciences
Ch. 7.1 - Describe the general purpose of an experimental...Ch. 7.1 - Define independent, dependent, and extraneous...Ch. 7.1 - Describe the third-variable problem and the...Ch. 7.2 - Explain why manipulation of an independent...Ch. 7.2 - Explain why control of extraneous variables is a...Ch. 7.2 - Explain how an extraneous variable can become a...Ch. 7.3 - Describe the three primary techniques for...Ch. 7.4 - Describe the purpose for control conditions in...Ch. 7.4 - Explain when a manipulation check is needed,...Ch. 7.5 - Define field studies and simulation, explain why...
Ch. 7 - In addition to the key words, you should also be...Ch. 7 - Dr. Jones conducted a study examining the...Ch. 7 - In an experiment examining human memory, two...Ch. 7 - It has been demonstrated that students with high...Ch. 7 - A researcher would like to compare two methods for...Ch. 7 - Define extraneous variable and explain how...Ch. 7 - Identify the two characteristics needed for a...Ch. 7 - Identify the two active methods of preventing...Ch. 7 - Explain how the process of randomly assigning...Ch. 7 - Can a research study be an experiment without a...Ch. 7 - What is the general purpose of a manipulation...Ch. 7 - What is the general purpose for using a simulation...Ch. 7 - Prob. 1EACh. 7 - A researcher examines the relationship between the...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- What is an experiment? Give two examples.arrow_forwardResearchers have observed that high school students who watched educational television programs as young children tend to have higher grades than their peers who did not watch educational television. Is this an observational study or a controlled experiment? Explain why.arrow_forwardWhen an interaction term is statistically significant, you must be cautious in interpreting the main effects. True or False?arrow_forward
- Which of the following is NOT a threat to the internal validity of an experiment? Experimenter effects. Confounding variables Demand characteristics. Within-groups design.arrow_forwardExplain the difference between an observational study and an experiment. Give the description of a real-word example of each of these types of studies. Explain the purpose of blinding (single or double) in experimental studies using an example.arrow_forwardIf the omitted variable is negatively correlated with the treatment and has a positive impact on the outcome, the true causal effect is bigger than the estimated effect. Blank 1: enter "True" or "False" Blank 2: explain briefly (1-3 lines).arrow_forward
- A researcher is testing the effect of one independent variable using three treatment conditions. She compares three group means where there are different people in each group. It is best for her to use which type of statistical analysis?arrow_forwardA psychological study wants to analyze the relationship between anxiety and binge drinking; a questionnaire for anxiety and questionnaire for binge drinking is administered to each subject. What would be a good statistical test to test the hypothesis?arrow_forwardA researcher was interested in studying how gender (male vs. female) and age (younger vs. older) affect performance in a simple reaction time task. Which statistical test should be used to assess the effects of gender and age on reaction?arrow_forward
- A researcher is interested in ascertaining whether performance on an aptitude test is significantly related to performance on the job. He obtained an aptitude test score of 50 new employees as well as their job performance ratings from their supervisors. He, however, suspects that some of the supervisors were biased in their ratings into ranks. what statistical test should be used to test the research hypothesis? Expain your answer.arrow_forwardHelp please!!arrow_forwardWhat is the difference between two samples that are dependent and two samples that are independent? Give an example of two dependent samples and two independent samples.arrow_forward
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what is Research Design, Research Design Types, and Research Design Methods; Author: Educational Hub;https://www.youtube.com/watch?v=LpmGSioXxdo;License: Standard YouTube License, CC-BY