STRENGTHS

• STRENGTHS OF SCHAFFER AND EMERON'S STUDY?

  • internal validity
  • external validity
• HOW DOES SCHAFFER AND EMERON'S STUDY HAVE HIGH EXTERNAL VALIDITY?

  research was conducted in the infant's natural environment, therefore it has high mundane realism and ecological validity
• COUNTERPOINT FOR EXTERNAL VALIDITY?

  study lacks temporal validity
• WHY DOES SCHAFFER AND EMERON'S STUDY LACK TEMPORAL VALIDITY?

  family structure in UK changed a lot since 1960s
• EXAMPLE OF HOW FAMILY STRUCTURE IN UK HAS CHANGED SINCE 1960S?

  more children go to nursery, therefore causing possibility of multiple attachments occurring earlier than expected
• WHAT DOES THE COUNTERARGUMENT FOR SCHAFFER AND EMERON'S STUDY AGAINST EXTERNAL VALIDITY SUGGEST?

  stages may not be applicable to attachment development today
• WHY DOES SCHAFFER AND EMERON'S STUDY HAVE HIGH INTERNAL VALIDITY?

  the same children were observed and followed up, therefore there was no influence of extraneous participant variables
• WHAT DOES THE LACK OF EXTRANEOUS INDIVIDUAL DIFFERENCES SUGGEST ABOUT SCHAFFER AND EMERON'S STUDY?

  actually measures stages of attachment development, without influence of individual differences
• COUNTERARGUMENT FOR INTERNAL VALIDITY OF SCHAFFER AND EMERON'S STUDY?

  hard to measure observable behaviours in babies
• WHY IS IS HARD TO MEASURE OBSERVABLE BEHAVIOURS IN BABIES?

  they are immobile/ usually sleeping, crying or being fed
• FUTHER COUNTERPOINT FOR INTERNAL VALIDITY ARGUMENT?

  mothers may have completed diaries retrospectively, therefore they may be inaccurate
• WHY MAY DIARIES BE INACCURATE DUE TO RETROSPECTIVE COMPLETION?

  forget events/ respond to social desirability