What is Hazan & Shaver's 'Love Quiz?'
The major importance of attachment is the ability to form relationships with people other than your primary attachment figure.
Bowlby's idea of the internal working model is explored again here to see if there is a link between attachment type and the quality of later relationships.
Internal working model - The mental representations the child goes on to have later in life as an adult. These include friendships and working relationships but most crucially relationships with romantic partners and the person's own children.