ethics+sampling

• sampling techniques:

  volunteer (advertisement)

  opportunity (whos available)

  random (equal chance)

  systematic (n)

  stratified (sub groups, ratio)
• random sampling

  strengths:

  reduced researcher bias

  representative sample

  weakness:

  time consuming(unwilling participant)
• opportunity sampling

  strength:

  quick and easy

  weakness:

  less representative
• volunteer sampling

  strength:

  quick and easy

  weakness:

  less representative
• systematic sampling

  strength:

  reduced researcher bias

  weakness:

  less representative
• stratified sampling

  strength:

  most representive

  weakness:

  time consuming, could lead to small sample size and then it becomes less representative
• ethical issues:

  protection from harm

  deception

  confidentiality

  informed consent
• resolving ethical issues:

  pseudonyms

  debrief

  brief

  right to withdrawal
• consent form:

  purpose

  procedure

  ethical info

  place to sign