Research Methods for Behavioral Sciences - With MindTap
6th Edition
ISBN: 9781337754989
Author: GRAVETTER
Publisher: CENGAGE L
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Chapter 3, Problem 8E
A researcher claims that intelligence can be measured by measuring the length of a person’s right-hand ring finger. Explain why this procedure is very reliable but probably not valid.
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One of the categories of special education are children who are diagnosed with Speech/Language Impairment (SLI). The most common SLI diagnosis is dyslexia. A major difficulty for children with this diagnosis of dyslexia surrounds the skills of reading. A special education teacher is interested in knowing whether a new reading technique increases reading skills for children diagnosed with dyslexia. She uses the WRAT as a way of measuring reading skills and the average for this test is 55 with a standard deviation of 4.5. She takes a random sample of 125 children diagnosed with dyslexia, employs her reading program with them and finds their mean on the WRAT to be 56.1. Test the null hypothesis at the .05 level of significance.
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Chapter 3 Solutions
Research Methods for Behavioral Sciences - With MindTap
Ch. 3.1 - Define a construct and explain the role that...Ch. 3.1 - Define an operational definition and explain the...Ch. 3.2 - Define a positive relationship and a negative...Ch. 3.2 - Define the validity of measurement and explain why...Ch. 3.2 - Define the reliability of measurement and explain...Ch. 3.3 - Compare and contrast the four scales of...Ch. 3.4 - Identify the three modalities of measurement and...Ch. 3.5 - Define a ceiling effect and a floor effect and...Ch. 3.5 - Define an artifact and explain how examples of...Ch. 3 - In addition to the key words, you should also be...
Ch. 3 - Hypothetical concepts, such as honesty, are...Ch. 3 - Briefly explain what an operational definition is...Ch. 3 - A researcher evaluates a new cholesterol...Ch. 3 - A clinical researcher has developed a new test for...Ch. 3 - Suppose that a social scientist has developed a...Ch. 3 - Explain how inter-rater reliability is...Ch. 3 - A researcher claims that intelligence can be...Ch. 3 - For each of the following operational definitions,...Ch. 3 - In this chapter we identified four scales of...Ch. 3 - Select one construct from the following list:...Ch. 3 - Describe the relative strengths and weaknesses of...Ch. 3 - What is a ceiling effect, and how can it be a...Ch. 3 - Explain how an artifact can limit the validity and...Ch. 3 - What are demand characteristics, and how do they...Ch. 3 - Describe how the concept of participant reactivity...
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