What's the name of the syndrome when hostages have positive feelings towards their captors?

Stockholm syndrome is a condition that causes hostages to develop a psychological alliance with their captors as a survival strategy during captivity. It was formally named in 1973 when four hostages were taken during a bank robbery in Stockholm, Sweden. The hostages defended their captors after being released and would not agree to testify in court against them.

These feelings, resulting from a bond formed between captor and captives during intimate time spent together, are generally considered irrational in light of the danger or risk endured by the victims.

Psychologists who have studied the syndrome believe that the bond is initially created when a captor threatens a captive’s life, deliberates, and then chooses not to kill the captive. The captive’s relief at the removal of the death threat is transposed into feelings of gratitude toward the captor for giving him or her life.