Chapter 2 - Research Methods Flashcards
Name the three characteristics of an experiment
manipulates one or more variables
measures whether manipulation influences other variables
tries to control outside factors that might influence outcome
what is the independent and dependent variable
Independent- the variable manipulated
Dependent - The variable measured, and effected by independent variable
what is a control group
group not exposed to treatment- no independent variable
what is between groups design in an experiment
every participant experiences only one condition, and you compare group differences between participants in various conditions.
It’s the opposite of a within-subjects design, where every participant experiences every condition
what is between subjects design in an experiment
participants are exposed to all conditions
what is counterbalancing in experiments
when the order of conditions is varied so no conditions has an advantage over others
what is validity
how well an experiment tests what its meant to test
what is a confounding variable
when two variables mix together and you cant tell which one effected the dependent variable
what is the placebo effect
a substance with no pharmalogical effect
what is the experimenter expectancy effect
when an experimenter subtly, unintentionally influences participant which causes them to act in a consistent manner to the hypothesis
what is the double-blind procedure
when the participant and experimenter are blind to which experimental conditions the participant is in - helps combat the experimenter expectancy effect
what is internal validity
degree to which an experiment supports clear, true conclusions
what is external validity
the degree to which results can be generalized
what is meta analysis
combining results of two experiments on the same topic to test the significance of findings
what are the steps to the scientific process
- identify a question
- gather info to form a hypothesis
- test by conducting research
- analyze data and report findings
- build on it - conduct more research, challenge findings, make theories
what is a hypothesis
tentative statement about a relation between two events
what are operational definitions
defines a variable in terms of specific procedures used to produces or measure it - translate abstract into something measurable