Research Methods Flashcards
Critical Thinking
the support of beliefs through scientific observation/thinking
Hypothesis
a precise, testable statement of what researchers predict will be the outcome of the study
Theories
an explanation or model that fits many observations and makes valid predictions
Observer Effect
the recognition that researchers are interacting with the system and changing the phenomenon being studied ( usually through instruments of measurements )
Observer Bias
answering questions the way you think they would want them to be answered
Positive Correlation
direct relationship where results lean in the same direction ( pos and pos, neg and neg )
Negative Correlation
inverse relationship where results are opposite of one another ( pos and neg, neg and pos )
Zero Correlation
no correlation ( is .000 )
Illusory Correlation
is an illusion where something looks like it is there but nothing is
Dependent Variable
experimental factor to measure ( manipulates the independent variable )
Independent Variable
experimental factor that is manipulated (what researchers are studying)
Confounding Variables
condition,other than the one being manipulated, that affect the D.V
Experimenter Effect
any influence a researcher may have on the results of his or her research, derived from either interaction with participants or unintentional errors of observation, measurement, analysis, or interpretation
Representative Sample
the most accurate sample, but the most difficult to achieve (is a mirror of population [reflects perfectly, just decreased])
Random Sample
every member of the population has an equal chance of being in the sample
Convenience Sample
whatever is easiest for you (the experimentalist), but is the least accurate and most easily to achieve
Operational Definitions
define research variables, allows for replication (makes it easier for researchers to replicate the experiment)
Population
entire group that hypothesis applies to (ex: (u.s) women athletes 18-34)
Placebo (group/effect)
one group gets the active treatment, the other gets the placebo* (*a substance that has no therapeutic effect, used as a control in testing new drugs)
Control Group
group where nothing is varied
Experimental Group
exposed to the independent variable
Experimenter Bias
when the observer’s prejudices influence his behaviors towards the people they’re observing
Double-Blind Study
study in which the neither the experimenter nor the subjects know if the subjects are in the experimental or control group
Sample
a portion of the population