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Physcology Ch 2
deffinitions for chapter two
| Question | Answer |
|---|---|
| psychology | a study of thinking, feeling, and behavior |
| hypothesis | tentative statement about the relationship between two variables |
| variable | things controlled or observed in a study |
| experiment | when one o more variables is manipulated by the researcher to see if it affects another variable |
| independent variable | the variable that the researcher controls |
| dependent variable | the variable that is measured at the end, outcome variable |
| experimental group | gets the iv |
| control group | other group used as a control |
| surveys | asking people questions. to be valid, the sample must be a representation of the population. problems with this research designs include the fallibility of memory and social desirability bias. |
| social desirability bias | people say what would put them in positive light |
| case study | in depth study of one or a few subjects |
| observation | don't do anything, just watch |
| obtrusive observation | the observer is noticeable |
| unobtrusive observation | the observer is not noticeable, which creates a problem of ethics |
| correlation | shows a relationship between two things, can be positive or negative. Does NOT show cause and effect |
| correlational coefficient | numerical index of strength of relationship (r.) |
| cross sectional design | sampling subjects of different ages for one time |
| longitudinal study | study the same subjects over time |
| statistically significant | the probability that your findings are due to chance is 5% or less |
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