Regressive behavior (Hebethymia)

Regressive behavior (or cognition) in hebethymia is the regression or evolution of cognition and personality to be stuck in a childlike or teenage state for milder cases. For example, a child may grow up and become an adult but act and "think" like a teenager.
== Symptoms ==
* Behavioral regression.
* Developmental or cognitive regression.
* Reduced speech efficiency.
* Reduced maturity of behavior.
* Rocking back and forth or pacing.
* Masturbation.
* Whining or picking tantrums.
* Acting out.
* Thumb-sucking.
* A positive could be that people with the condition can learn faster than others.