Habituation is one of the simplest and most common forms of learning. It allows people to “tune out” non-essential stimuli and focus on the things that really demand attention. Habituation usually refers to a reduction in innate behaviours, rather than behaviours developed during conditioning in which the process is termed “extinction”.   Habituation is the decrease of a response to a repeated eliciting stimulus that is not due to sensory adaption or motor fatigue. It is a form of adaptive behavior or neuroplasticity that is classified as non-associative learning.