Exam 2: The Tools of Psychological Research

Neither the subjects nor the experimenter recording the data knows which subjects belong to a particular group.This is an example of:

Dr.Clausen finds a strong correlation exists between age at marriage and probability of divorce.He concludes getting married at a young age causes divorce.His conclusion is flawed because of:

Professor Rosetti teaches Introductory Psychology at 9:00 AM and 3:00 PM, and is wondering if the morning section did better than the afternoon section on the first test.To be sure, he should use:

Significant correlations permit researchers to:

Dr.Ep has found that no matter how students score on the first midterm, all the students in her class tend to score between 75% and 80% on the final exam.This suggests that:

Scientific method always ends with:

Museum administrators who determine the popularity of various exhibits by measuring how quickly the floor tiles in front of each exhibit wear out are engaged in:

Two variables have a(n) ____________________ correlation if the values of one variable increase as the values of the other variable decrease.

Measures of central tendency:

When the experiment ended, Raj told subjects the purpose of the experiment, what he hoped to learn, and who to contact for further information about the results.This was part of the ethical requirement of:

According to the APA code of ethics, deception in research is only justified if the scientific, educational, or applied value of the study is clear, and there is no way to answer the research questions adequately without deceiving the participants.

When George creates a scatterplot that compares achievement test scores and grades in school, the points on the scatterplot fall roughly along a line that slants up and to the right.Based on his scatterplot, George can conclude that achievement test scores and grades in school:

Paul is searching the internet for different ways he can summarize and describe the data he has collected.He is searching for:

Loss of external validity can result from:

Inferential statistics help researchers:

The ethical practice in which the purpose of a study is fully disclosed to the study's participants, once the study is over, is known as:

The ethical practice that involves explaining, in easy-to-understand language, any significant factors that might influence a participant's willingness to participate in a research study is known as:

Dr.Kipp predicts that if the level of lighting on an assembly line is reduced, then worker productivity will increase.This suggests that Dr.Kipp believes lighting level and productivity are:

Explain what is meant by a placebo and discuss how placebos can be used to reduce participant expectancies in single-blind studies.

Random sampling occurs when each person in a population has an equal chance of being selected to participate in a research study.