Hi everyone,
I passed the psychiatry certification exam with a score of 440, about 2.8 standard deviations above the mean (average score 300, avg 311 for 1st time test takers, with standard deviation of 50). To study, I used BTB, K&S, DSMV manual, and APA practice guidelines. I watched all the BTB lectures, read the lecture outlines twice, and completed all the BTB questions over and over again until 100% correct. I also looked at the outline of content covered for the maintenance of certification exam (the outline for content for the initial certification was more vague) which was more detailed and made sure I knew everything listed, you can see the outline here:
https://www.abpn.com/wp-content/uploads/2020/07/2021_Psychiatry_CC-MOC_Content_Specifications.pdf
Lastly, I read through the dsm as it lists the prevalence, age of onset, gender differences, associated disorders, risks / protective factors for each. I also read through the APA practice guidelines that was very helpful. I hope this helps.