At the ANU Center for Distance Education website, there is only Diploma in Food Production course offered by the institute. The course of ANU Diploma in Psychology isn't available. You can visit the official website of the ANU CDE in order to know about the offered courses by considering the link below:

https://anucde.apcfss.in/coursesOffered?lscId=0

For more information regarding ANU you can consider the link below:

https://www.careers360.com/university/acharya-nagarjuna-university-guntur

I hope this helps. Wish you a great day!