According to the authors:
We’ve always been able to say how much a Bachelor’s degree is worth in general. Now, we show what each Bachelor’s degree major is worth.... The report finds that different undergraduate majors result in very different earnings. At the low end, median earnings for Counseling Psychology majors are $29,000, while Petroleum Engineering majors see median earnings of $120,000.Follow the link below to download copies of the full report.
What's It Worth? The Economic Value of College Majors
Source: Carnevale, A P; Strohl, J & Melton, M (2011), What's It Worth: The Economic Value of College Majors, Georgetown Center on Education and the Workforce, Washington, DC.