A researcher conducts an experiment to establish a relationship between a chess player's mental stability and his performance in a game. He finds that the two have a Pearson product-moment correlation coefficient value of +1.00. This means the two variables—mental stability and performance—have a _____ relationship.
Fill in the blank(s) with the appropriate word(s).
positive linear
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A researcher would like to examine the relationship between self-esteem and academic performance for high school students. This researcher could use a correlational study or a(n) ____
a. differential study comparing academic performance scores for a group of high self-esteem students and a group of low self-esteem students. b. experimental study comparing academic performance scores for a group of high self-esteem students and a group of low self-esteem students. c. descriptive study examining self-esteem for a group of students who are in the top 25% of their high school class. d. case study of a student with extremely low self-esteem but outstanding academic performance
A barefoot child steps on a bee, then jerks his or her foot back in response to the sting. This response has likely involved all parts of the nervous system EXCEPT
a. the brain. b. the spinal cord. c. motor neurons. d. connector neurons.
With respect to data collection, which is true?
a. Compared with in-person survey respondents, Web survey respondents tend to yield higher-quality data. b. A question such as, “Do you believe the death penalty should be legal,” generally should be located near the end of a survey. c. Collecting demographic information is not useful. d. The more demographic information collected, the higher the quality of data attained.
What is the most popular drug on high-school and college campuses in the United States?
a. marijuana c. cocaine b. alcohol d. heroin