When a sea star strives to get near an urchin, the urchin moves its spines aside and lets the sea star's arm get really close. Then the pincers chomp on the sea star's tube feet. The sea star immediately backs off. However, purple sea urchins' pincers can't defend against sunflower stars. If a sunflower star approaches, an urchin waves its spines and pincers and retreats. If the urchin doesn't move away fast enough, the sunflower star swallows the urchin whole.
Interpersonal therapy: A form of psychotherapy in which the focus is on a patient's relationships with peers and family members and the way they see themselves.Interpersonal psychotherapy (IPT) is based on exploring issues in relationships with other people.nterpersonal therapy: A form of psychotherapy in which the focus is on a patient's relationships with peers and family members and the way they see themselves.
In family therapy sessions, all members of the family and both therapists (if there is more than one) are present at most sessions. The therapists seek to analyze the process of family interaction and communication as a whole; they do not take sides with specific members.amily therapy is often recommended in the following situations: 1  Treatment of a family member with schizophrenia or multiple personality disorder (MPD). 2  Family therapy helps other family members understand their relative's disorder and adjust to the psychological changes that may be occurring in the relative.