Exam 2: E: Reading and Evaluating Scientific Research

Most people would agree that anxiety can lead to sleep loss.However,Dr.Jenkins believes that sleep deprivation can also cause increased anxiety.Which research method would allow him to test a cause-effect relationship between the two?

Which of the following statements describes the amount of cognitive and emotional risk to participants allowed in psychological research today?

Which of the following is an example of demand characteristics affecting an experiment?

A teacher notices that,on the last science test,some students did very well while other students performed poorly or had grades somewhere in the middle.If she wanted to measure how "spread out" the scores were,which descriptive statistic could she use?

Scientists study a _________ and then generalize the results of their investigation to a __________.

Keisha performs an experiment with two randomly assigned groups of school children.The first group is allowed 15 minutes of recess play before a math test,while the second group watches a video before the test.When she analyzes the test scores,she finds that there is a statistical difference between the groups,with the recess group scoring higher,on average,on the test.Which conclusion can be drawn from this result?

Under which of the following circumstances would the mean be the best measure of central tendency to use?

What does a correlation coefficient of -0.94 indicate about the relationship between two variables?

Why it is a bad idea to draw conclusions from anecdotal evidence?

The use of deception in psychological research is