According to Erik Erikson, how many stages of psychosocial development are there?

→ Who gave the Theory of Psychosocial Development? → Who is considered the social promoter of development? → In Erik Erikson's Psychosocial Development Theory, the development of personality is considered a lifelong process. If an individual from puberty through adolescence remains unable to develop a clear self-identity and is confused about their social roles, which specific stage of psychosocial crisis are they facing according to Erikson, and what could be the result? → In the context of Sigmund Freud's Psychosexual Development Theory, which of the following stages represents the developmental period where the child's libido temporarily becomes dormant or quiet, the main focus is on social and peer relationships and skill development, and it is considered to have a close connection with Erikson's psychological development? → Who defined psychology as the 'science of mind or brain'? → Who is the proponent of the Army Alpha Test?