Create an account
the small group of participants, out of the total number available, that a researcher studies
research method in which the psychologist observes the subject in a natural setting without interfering
research method in which information is obtained by asking many individuals a fixed set of questions
research method in which data is collected about a group of participants over a number of years to assess how certain characteristics change or remain the same during development
research method in which data is collected from groups of participants of different ages and compared so that conclusions can be drawn about differences due to age
the group that is treated in the same way as the experimental group except that the experimental treatment (the independent variable) is not applied
a situation in which a researcher's expectations influence that person's own behavior, and thereby influence the participant's behavior
an experiment in which the participants are unaware of which participants received the treatment
an experiment in which neither the experimenter nor the participants know which participants received which treatment
a change in a participant's illness or behavior that results from a belief that the treatment will have an effect, rather than the actual treatment
a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
an arrangement of data that indicates how often a particular score or observation occurs
a graph of frequency distribution shaped like a symmetrical, bell-shaped curve; a graph of normal distribution
a measure of variability that describes an average distance of every score from the mean
describes the direction and strength of the relationship between two sets of variables
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together