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Physcology Ch 2

deffinitions for chapter two

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
Created by: 100002942765217