The PhD can vary depending on the institution and country in which it is awarded. Most scholars pursue a PhD because of strong motivation to contribute to the academic community as well as true curiosity about their chosen field of study.
A Psychology PhD is required if you want to open your own private practice. In most cases, you will need this level of degree if you want to teach and conduct research at a university level.
Education in the United States is mainly provided by the public sector, with control and funding coming from three levels: state, local, and federal, in that order. The common requirements to study at a higher education level in United States will include your admissions essay (also known as the statement of purpose or personal statement), transcript of records, recommendation/reference letters, language tests
Request Information Doctoral Programs in Psychology in Los Angeles in USA 2017/2018
or search for similar programs here