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Wednesday, March 10, 2010

Research Methods in Psychology- part 4

1. What are some features of good scientific research?
Good scientific research must have precise hypotheses, replicability, falsifiable theories and hypotheses, and parsimonious explanations.

2. What is sampling bias?
Sampling bias is a type of error that occurs when a sample isn’t representative of the population from which it is drawn.

.3. Why might it be problematic to rely only on self-report data when doing research?
Self-report data can be misleading. People sometimes intentionally lie, give answers based on wishful thinking, don’t understand the questions asked, or don’t remember information..

4. Why is it problematic to draw cause-and-effect conclusions based on correlative data?
We cannot draw cause-and-effect conclusions about correlative data because one factor can be related to another factor without causing it.

5. What does it mean if a researcher claims that a particular result is statistically significant?

If a result is statistically significant, it is probably not due to chance.



Research Methods in Psychology Quiz

1. Which of the following describes single-blind experiments?
2. What does it mean if two variables have a positive correlation?
3. In what type of study does a researcher study an individual subject in depth?
4. How can we determine if a test has good validity?
5. What is the variable called that a researcher manipulates in an experiment?
6. What is the difference between the highest and lowest scores in a data distribution called?
7. The social desirability bias can affect which of the following?
8. Which of the following is a research method that allows a researcher to get information about a large number of subjects relatively inexpensively and easily?
9. What is a common way of controlling extraneous variables in an experiment?
10. When doing research involving deception with human subjects, researchers have an obligation to do which of the following?

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