Emotional development

Fetal development

Developmental biology

In Research A threat to internal validity in which subjects change during the course of the experiment or even between measurements and the researcher may not be able to determine if the cause of the discrepancy is due to time or the independent variable.

Mature can refer to the following meanings; Sexual maturity Mature is a character in the King of Fighters video game series. Mature 17+, a rating in the ESRB rating system See also...