Having considered facilitative conditions for the emergence of urgency at the neurobiological level, we next describe how individual differences in urgency are likely to emerge in development. We first argue that aspects of temperament anticipate the emergence of the urgency traits. We then apply person-environment transaction theory to describe the likely stability of urgency tendencies from temperament to personality. We then consider urgency in adolescence; we suggest the likelihood that there is a developmentally limited spike in urgency during the adolescent years.
