I didn't find a thread for Psychology Optional, so starting a new one!
Please do mention your resources, strategy and any good test series, if you're taking one
My resources
Paper 1
1. Robert Baron and Cicarelli
2. AK Singh
Paper 2
1. Smarak Swain
@GaryVee Nopes. 2021.
Oh, ok. There is Mukul Pathak's test series (offline only) and then there is Ankit Pathak's test series (Enserio Education; online only). He had scored maximum marks in Psychology in 2017 but couldn't find his place in the final list.
Enserio has uploaded a few tests on his website. You can take a look.