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Reaerch methods revision

Types of investigation

Type of investigation description strengths weaknesses

Laboratory experiment An experiment is when 2 High internal validity- Lacks ecological
groups are compared to see if all extraneous variables validity- findings can't
there is a difference. The IV are controlled so cause be generalised to real…

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Reaerch methods revision

experiment would be so we don't know if the
unethical link is the actual cause.

Self report measures Questionnaire- open, Interviews: participants Social desirability bias,
closed questions or can check to make sure which is when people lie
likert scale they understand a to fit in with…

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Reaerch methods revision

Naturalistic- good Naturalistic- hard to
ecological validity establish cause and
Controlled- high internal effect
validity Controlled- low
ecological validity


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