Exam 2: How Psychologists Do Research

Rarely does a psychological study have completely straightforward results. Usually there is some possibility that the difference between two groups could be due to chance. Explain how inferential statistics help us determine how statistically meaningful a study's results are.

Which variable does an experimenter manipulate when conducting experimental research?

When two variables are not related, the correlation coefficient will be close to _____.

Ralph Waldo Emerson wrote, "Nothing great was ever achieved without enthusiasm." How would you frame this question in clear and concrete terms so that it could be tested? Specify an operational definition for the major terms.

A correlation coefficient of +1.73 means that:

A variable that is predicted to be affected by an experimenter's manipulations in experimental research is called a(n):

The principle of falsifiability means that:

People who participate in research studies must participate voluntarily and must know enough about the study to make an intelligent decision about participating. This concept is known as:

The coefficient of correlation conveys:

Which of the following statements is true of a hypothesis?

In Chapter 2, we read about the disastrous consequences that can take place when conclusions are drawn solely on the basis of case studies. How does the alleged connection between autism and vaccinations illustrate the importance of the critical-thinking guideline, "Don't Oversimplify," discussed in Chapter 1?

Assessment instruments that are designed to tap unconscious feelings or motives are called:

Psychologists are scientists because:

Dr. Ahmed wants to study the effect of university experience on anxiety before taking an exam. Dr. Ahmed needs an operational definition for anxiety. Which of the following should she use?

Which of the following statements about skepticism is correct?

Which of the following is an example of a positive correlation?

Ping agrees to an evaluation designed to tap her unconscious feelings and motives. Ping will be given a(n):

Explain the purpose and process of peer review.

A result that is significant at the .05 level indicates that:

A correlation is a numerical measure of the: