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10 Cards in this Set

  • Front
  • Back
OBSERVATIONAL STUDY
OBSERVEs INDIVIDUALS AND MEASUREs VARIABLES OF INTEREST
- does attempt to influence the response
EXPERIMENT
DELIBERATELY IMPOSES SOME TREATMENT ON INDIVIDUALS IN ORDER TO OBSERVE THEIR RESPONSES
EXPERIMENTAL UNITS
INVIDUALS ON WHICH EXPERIMENT IS DONE
SUBJECTS
UNITS THAT ARE HUMAN BEINGS
TREATMENT
SPECIFIC EXPERIMENTAL CONDITION APPLIED TO THE EXPERIMENTAL UNITS
FACTOR
EXPLANATORY VARIABLE
RESPONSE VARIABLE
VARIABLE WHOSE VALUES ARE COMPARED ACROSS DIFFERENT TREATMENTS
DESGINS OF AN EXPERIMENT
REFERS TO THE CHOICE OF TREATMENTS AND THE MANNER IN WHICH THE EXPERIMENT UNITS ARE ASSIGNED TO THE TREATMENTS; DESCRIBES FACTORS, RESPONSE VARIABLES, AND TREATMENTS
COMPARATIVE EXPERIMENTS
COMPARES TWO GROUPS :
1. CONTROL GROUP - RECIEVES A FALSE TREATMENT TO CONTROL THE EFFECT OF LURKING VARIABLE
2. TREATMENT GROUP
PLACEBO EFFECT
RESPONSE TO A TREATMENT THAT CAN HAVE A PHYSICAL EFFECT; TO AVOID: COMPARE SEVERAL TREATMENT AND CONTROL GROUPS