Suppose you randomly select 40 participants, measure the length of each one's index finger, and also administer an IQ test to each. This research is an example of a(n)
a. correlational study. c. experimental study.
b. dependent variable. d. independent variable.
Question 2In a(n) _____, the experimenter measures scores on both variables, whereas in a(n) _____, the experimenter manipulates or changes one variable and measures scores on the other.
a. correlational study; research design c. correlational study; experiment
b. research design; experiment d. experiment; correlational study
Question 3Descriptive statistics are always applied to
a. true independent variables. c. quasi-independent variables.
b. dependent variables. d. conditions.
Question 4An instructor investigates whether the end of the chapter questions aid test performance by randomly assigning participants to one of two groups. One group completes half the questions, and another completes all the questions. Performance on a test is measured. The instructor should ask the question:
a. Does completing all the questions produce high test performance?
b. Do students prefer to complete half the questions or all the questions?
c. Are there consistent changes in the amount of questions answered as a function of test performance?
d. Are there consistent changes in test performance as a function of number of questions answered?
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