• how many studies were meta-analysed in van IJzendoorn's research?

  32
• how many countries were in van IJzendoorn's research?

  8
• what was the proportion of securely attached babies in China?

  50%
• what was the higher insecure attachment in collectivist countries?

  insecure-resistant
• who conducted an italian study on types of attachment?

  Simonelli et al
• what percentage of babies were secure in the italian study?

  50%
• what percentage of babies were insecure-avoidant in the italian study?

  36%
• who conducted a study in korea based for types of attachment?

  Jin et al
• what was the more common type of insecure attachment in the korean study?

  insecure-resistant