I think it is about the way we interacted with our parents as infants/ children.
Were they able to meet our needs and did we seem them as " the good our bad parent". Did we learn to trust, accept love or did they frustrate us etc.
That is a pattern we bring in to adulthood and they way we "view and interact with objects" not only people who are close but like a state of mind where we observe and deal with people and relationships based on our experiences in infancy and childhood and they way we view ourself in the world based on those early interactions.
Itīs important for the T to get picture of how the client relates to others as it has been founded so early in life so he or she can try to " correct" those unconcious patterns we donīt remember trying to make the foundation of a healthy realtionship where the therapist models a whole human being in therapy. That way the client wonīt lets say see all men as evil or authority figures as scary when in fact they might be nice people. The client percieve something that might not me correct based on early experiences wich can make it diffult relating to other people in a healthy way, where you see the person for who he or she is as a whole person good,bad, boring, fun not just bad based on subjectivity that this is a bad person ect. The client aloso comes to think of him or herself as a whole person during the interaction not just a person who is not worthy of love learned by "bad parent" or what ever the problem is . Not just black and white thinking about oneself or others inorder to form relationship based in " reality"
Feel free to correct or just skip this