Holly Has Recently Entered Therapy for Her Major Depressive Disorder

Holly has recently entered therapy for her major depressive disorder at an important "down" period in her life.Her therapist suggests that she and Holly will work together to identify and change Holly's irrational thinking.After six weeks,Holly feels less depressed.Suppose,however,that the change resulted not from the therapy but rather from the normal "ups and downs" that people experience.This suggests that clinicians need to consider the impact of ________ on therapeutic outcomes.

A) self-serving biases
B) spontaneous remission
C) the placebo effect
D) retrospective rewriting of the past