primary and secondary data

• What is primary data?

  Information collected directly from first-hand experience
• What is secondary data?

  Information collected by someone else for other purposes
• What are the key differences between primary and secondary data?

  • Primary data: firsthand collection for specific research
  • Secondary data: previously collected by others
• Why is primary data considered authentic?

  It is collected specifically for the investigation
• What advantage does primary data provide to researchers?

  High level of control over the data collection
• What is a disadvantage of collecting primary data?

  It requires significant time and effort
• What is a disadvantage of secondary data?

  Concerns over the accuracy of the data
• Why might secondary data be of little value to researchers?

  It may not meet the aims of their research
• What is meta-analysis in research?

  • Combines findings from multiple studies
  • Analyzes trends and patterns across research
  • Can include qualitative or quantitative analysis
• What is an example of meta-analysis in developmental psychology?

  Van Ijzendoorn et al.'s study on attachment
• How many studies did Van Ijzendoorn et al. examine in their meta-analysis?

  32 studies from 8 countries
• How many infants were included in Van Ijzendoorn et al.'s analysis?

  Over 1,990 infants
• What are the advantages and disadvantages of primary and secondary data collection?

  Advantages of Primary Data:

  • Authentic and specific to research aims
  • High control over data collection

  
  

  Disadvantages of Primary Data:

  • Time-consuming and expensive

  
  

  Advantages of Secondary Data:

  • Less time-consuming and cheaper

  
  

  Disadvantages of Secondary Data:

  • Concerns over accuracy and relevance