Maturity is the alternative explanation or threat to internal validity for when a problem resolves itself over time and the change is not just the result of the intervention.
Maturity can be described as level of psychology functioning one can attain which afterwards doesn't increase with age.
There are mainly four type of maturities: physical, mental, spiritual and emotional. It can defined not by age but how you respond to a situation.
A few characteristics of maturity include taking responsibilities for one's own action and problems, self awareness, self control, humility, gratitude, self acceptance etc.
Physical maturity is when we learn to take care of our body and start to understand that physical health must be top priority. Emotional maturity is learning the fundamental trait of happiness, spiritual puts everything into perspective, mental is having courage, responsibilities and validity.
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