I have some fantastic news. Well, I'm not actually sure if this only applies to AQA (B), but my teachers have both told me that you do not need to remember the name and date of the study, only the general outline of Aim, Procedure, Results and Conclusion. For example, if you were asked about conformity, you don't have to write "Asch (1951) blah blah", you can just write "A psychologist performed a study in which he gave participants simple observation tasks and..." Apparently you only would need to mention the date if it was relevant to the study, for example a study done in the 50's about women's responses to sexual language is relevant in that time frame and would yield different results today.
As for remembering the actual studies, you could try my technique, which was to make little revision cards, on which I listed the name of the study (e.g. Asch (1951)), then the main points of the study in this format:
AIM - What the pyschologist wanted to investigate
PROCEDURE - What the psychologist did
RESULTS - The data collected, such as percentages
CONCLUSION - What the psychologist found out.
EVALUATION - Was it a good study? How could it have been better? Was it ethical etc.
Then I group the cards together into topics, like all the studies for scoial influence, all the studies for Biopsychology, all the studies for cognition and the law, etc. I find it quite useful to have all the relevant information condensed into a few salient points, and organised into smaller groupings.
Good luck with the revision and exams!