Psychosocial phenomenon are those factors which take into consideration the interactions between SOCIAL and individual PSYCHOLOGY.
All human beings are governed by psychological processes such as thoughts, feelings, meanings and evaluations and all human beings also live and exist within social contexts meaning those environments in which other human beings co-exist.
The social context is highly influential in determining people’s experiences of life and ALL social rules and regulations were created by other human beings.
Psychosocial approaches argue that you cannot fully understand the psychological processes that take place inside human beings without recognising how they interact with the social context.
There are strong arguments that human reality is also a social construction! – See Social Constructivism.