This is the 15988th most frequent Russian word.
проявляются
"Are manifested" or "appear."
The word 'проявляются' here is used to describe the way talents become visible or apparent in context of creative activities.
Таланты детей проявляются в творческих занятиях.
Children's talents manifest in creative activities.
In this sentence, 'проявляются' indicates how problems tend to become evident or noticeable when under stress.
Проблемы часто проявляются в стрессовых ситуациях.
Problems often manifest in stressful situations.
Here, 'проявляются' is used to denote how symptoms appear or become observable after a period of time.