What is a strength for the Internal Working Model?
Research Support
Reviews of studies linking attachment to later development have concluded that early attachment consistently predictslaterattachment and attachment to own children
Insecure-avoidant attachment seems to convey mild disadvantages for any aspect of development, while disorganised attachment is strongly associated with later mental disorder
This means that secure attachment as a baby appears to convey advantages for future development while disorganised attachment appears to seriously disadvantage children
What is a limitation for the Internal Working Model?
Evidence Against
Not all evidence supports the existence of close links between early attachment and later development
Becker-Stoll et al (2008) followed 42 individuals from age 1, and at 16 attachment was assessed using the adult attachment interview and there was no evidence of continuity
This means that it is not clear to what extent the quality of earlyattachment really predictslaterdevelopment and there may be otherfactors
What is a limitation for the Internal Working Model?
Validity Issues with Retrospective Studies
Most research on the link between early attachment and later development are not longitudinal and researchers instead ask participants questions about their relationship with their parents and identify their attachment type from that
This results in questions about the validity of the research
This means that the measures of early attachment used in most studies may be confounded with other factors making them meaningless
What is a limitation for the Internal Working Model?
Confounding Variables
While the assessment of early attachment is valid, some studies that assessed attachment in infancy may have validity problems, as well as development may be affected by confounding variables
For example, parenting style may influence both attachment quality and later development, but genetically-influenced personality may be an influence on both factors
This means that we can never be sure that it is early attachment and not another factor that is influencing later development