### Browsed byDay: 12 October 2017

Chapter 2_Research Methods Test

## Chapter 2_Research Methods Test

NOTE:  Rubrics can be found under the College Board (AP) for the FRQ’s you completed today.  One was from 2004. IF YOU LEARN ONLY EIGHT THINGS IN THIS CHAPTER….

1.  Observation is the most important aspect of psychological research
2. Operationalism means to define our variables in the manner in which we are going to measure them
3. Correlation measures degree of relationship between variables and ranges from -1 to +1.
4. Correlation does not imply causation
5. The difference between an independent and dependent variable
6. Confounding variables
7. What descriptive and inferential statistics tell us about the results of a study
8. The role of ethics in psychological research

Statistics

Standard Deviation is the amount, on average, that each score differs from the mean.  Thus, the standard deviation tells us about how much each score is different from the average score. The bigger the standard deviation, the more spread out the scores are.

Normal Curve:  See my notes on how the curve is divided out.  We know, for example, that if we select randomly from a curve, we’ll most likely get a score that falls between -1 and +1 standard deviations from the mean.  Essentially, we can predict there is a 68% chance we will get a score from the section of the curve.  Please refer to page 40 (fig2.10)  Know the Normal Curve!  Make sure you know these percentages.

Illusory Correlation:  Random events that we notice and falsely assume are related.

Range- the difference between the highest and lowest scores in a distribution

Double-Blind procedure- neither the participants nor the research assistants collecting the data will know which group is receiving treatment