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Research Methods (Experiment (Aim: causation, IV (Manipulated (Causal…
Research Methods
Experiment
Aim: causation
IV
Manipulated
Causal relationship
no bidirectional ambiguity
DV
Start: hypothesis
Controlled variables
usually lab
Low ecological validity
lack generalisability to other situations
High internal validity
low confounding variables
credible
Tends to have ethical issues
Quasi Experiment
IV
Pre existing
correlation
bidirectional ambiguity
DV
Start: hypothesis
Controlled variables
field
High ecological validity
generalisability to other situations
Lower internal validity
confounding variables
lacks credibility
Usually more ethical
Questionare
measure using set of questions
IV
Correlation
bidirectional ambiguity
Low internal validity
High ecological validity
Surpasses ethical boundaries better than experiments
DV