Chp- 9 Flashcards
The _________ ________ involves the manipulation of an independent variable (IV).
experimental method
In observational research the goal is to what?
find the association between variables and prediction.
In experimental research psychologists seek to determine what?
why something happens or the cause of the event
A ________ approach uses several different measures of behavior is preferred.
multimethod
Why Do Psychologists conduct experiments?
nTo test hypotheses about the cause of a behavior.
nTo determine if a treatment plan or intervention effectively changes behavior.
nTo determine if a particular drug is effective.
What is the general structure of the experiment?
The experimental design
What are the Three biggest aspects of an experiment?
•(1) The number of IV’s
•(2) The number of treatment conditions or levels of the IV needed to make a fair test of the experimental hypothesis.
•(3) Whether the same of different participants are used in each condition.
nWhen different participants take part in each condition of the IV, this is called a between-subjects or independent samples design.
When we get similar results using different methods, our conclusions are said to have what?
convergent validity.
Experiments are highly effective for testing hypotheses because they allow researchers to have a high what?
degree of control in a study.
_________– by changing the amount or dosage received (ex. mg of Prozac administered).
Quantitatively
________– by completely changing what the participants in the levels or categories of your IV are receiving (ex. Prozac vs. Effexor vs. Zoloft).
Qualitatively
_______ – most of your participants have the minimum score.
Floor effect
_____– most of your participants have the maximum score.
Ceiling effect
