Research Methods- CH 5

What does it mean that "reliability is necessary but not sufficient for validity"?

If a measure is valid, it is also reliable.

In interrogating the construct validity of a measure, which question should a researcher ask?

Is there enough evidence that this measure is valid?

Two researchers tell you they study the same thing. However, when you look at their research papers, they do not use similar methodologies or measurements. How is this possible?

The researchers have the same conceptual definitions.

Hosea is studying the relationship between caffeine consumption and problem-solving ability. What would be a quantitative way to operationalize problem-solving ability

The time spent solving a math problem

RESEARCH STUDY 5.1 Dr. Valencia is considering conducting a study examining whether narcissistic people have poorer social interactions than those who are not narcissistic. One of her first tasks is to determine which of her participants are narcissistic and which are not. She decides to use the scale created by a colleague, the Mayo scale. Question 1 reads, "I tend not to think about other people as much as I think about myself." Question 2 reads, "I do not have a high opinion of myself." Question 3 reads, "I think other people think I am really special." Dr. Valencia calculates a correlation coefficient (r) to examine the relationship between Question 1 and Question 2 and between Question 1 and Question 3. She finds a correlation coefficient of r = -0.73 between Questions 1 and 2 and a correlation coefficient of r = 0.74 between Questions 1 and 3. Which of the following is true of her findings?

There appears to be good internal reliability in the scale.

Which of the following is true of operational definitions

There are multiple operational definitions that are possible for any one conceptual definition. The specification of operational definitions is one of the creative aspects of the research process. Operational definitions are created after conceptual definitions are determined.

what is the difference between a ratio scale of measurement and an interval scale of easurement

a ratio scale of measurement has a zero value that actually means "nothing" or "absence of something" but an interval scale does not

Asking many similar questions when trying to measure a concept is done to_________.

cancel out measurement errors

what is the term for a researchers definition of the variable in question at a theoretical level

conceptual variable

RESEARCH STUDY 5.1 Dr. Valencia is considering conducting a study examining whether narcissistic people have poorer social interactions than those who are not narcissistic. One of her first tasks is to determine which of her participants are narcissistic and which are not. She decides to use the scale created by a colleague, the Mayo scale. Question 1 reads, "I tend not to think about other people as much as I think about myself." Question 2 reads, "I do not have a high opinion of myself." Question 3 reads, "I think other people think I am really special." Dr. Valencia is concerned about the validity of the measure of narcissism recommended by her colleague. She sends a copy of the measure to the faculty members in her psychology department to look at and they all tell her it looks like it will measure narcissism. She now has evidence of which of the following?

Face Validity