longitudinal studies

• longitudinal study - when researchers repeatedly examine the same individuals to detect any changes that may occur over a period of time. They are done because they are useful in understanding social change over time as they track the same subjects repeatedly
• strengths:

  • longitudinal studies are able to paint a rich and accurate picture of participants lives.
  • reduces recall bias or error
• weaknesses:

  • time consuming
  • expensive
  • they require significant commitment and resources to be effective