Chimerism is a very rare condition caused by the fusion of zygotes (fertilized eggs) into a single form during early cell duplication. It is extremely rare, with only forty or so known human cases. It is somewhat more common in the animal kingdom.
Cognitive-behavioral therapy is an action-oriented form of psychosocial therapy that assumes that maladaptive, or faulty, thinking patterns cause maladaptive behavior and negative emotions.
Computerized cognitive behavioral therapy (CCBT) has been described by NICE as a generic term for delivering CBT via an interactive computer interface delivered by a personal computer, internet, or interactive voice response system , instead of face-to-face with a human therapist.