Controlling extraneous variables Flashcards
Aspects of the testing conditions that need to be controlled
Physical variables
A technique to control variables by removing them from the expriment
Elimination
Keeping all aspects of the treatment conditions identical except for the independent variable that is being manipulated
Constancy of condition
A technique used to control the impact of extraneous variables by distributing their effects equally across treatment conditions
Balancing
Which is more important, Internal validity or external validity?
Internal validity
It pertains to the qualities of the relationships between subjects and experimenters that can influence the results of an expriment
Social variables
Specific cues in experimental research that may inadvertently influence a subject’s response in an experiment. Elicit particular behaviors
Demand characteristics
An experiment in which subjects are not told which of the treatment conditions they are in
Singe-blind experiment
Refers to the improvement in symptoms that occurs after receiving a treatment that is physically inactive
Placebo effect
A plausible but false explanation of the procedure in an experiment told to disguise the actual research hypothesis so that subjects will not guess what it is
Cover story
Any behavior of the experimenter that can create confounding in an experiment
Experimenter bias
An experiment in which neither the experimenter nor the subjects know which treatment conditions the subjects are in
Double-blind experiment
The personal characteristics that an experimenter or volunteer subject brings to the experimental setting
Personality variables
Extraneous variables stemming from procedures created by the environment. or context of the research setting
Context variables
