experiment types

• laboratory experiments - evaluation points

  :) highly controlled settings + no extraneous variables

  :) replicability = validity

  :( lacks mundane realism + ecological validity (tasks + settings)
• field experiments - evaluation points

  :) high mundane realism = less demand characteristics

  :( extraneous variables

  :( low reliability
• natural + quasi experiments

  = IV is naturally occurring but in a quasi the IV is naturally occurring to a person ( disability/age)

  :) can study things seen as unethical or unpractical

  :) less chance of researcher bias or effects

  :( extraneous variables
• pilot studies

  =A pilot study is a trial run of a research method, usually with a very small sample, in order to ensure that the method will work as intended.