I left a PhD position that I did for a year and then changed to a different area in psychology, the subject I do my PhD in. I am just wondering how to put that unfinished PhD on my CV. After my current PhD, I would like to continue on academia and apply for postdoc positions, maybe even in the same university in which I dropped out but on a different department. So I don't know how could I put that antecedent on my CV so that does not really affect me later on. Or would you think that with my achievements during my PhD the previous academic history remains irrelevant? I was thinking I could just leave it as one year of research internship, but I am not sure about this.
I think that since it will never be finished, put the work you did as "pursued PhD in and did the following: item1, item2" etc. I don't think it is required to put in the word "unfinished", as that is implied, but if someone asks, always be honest.
If/when the other PhD is finished, this should add credibility, not detract from it.
Have a friend/colleague review for suggestions.
I don't see the need to put unfinished things on a CV, especially if they're not relevant to your future. I recommend just listing fully completed or in progress degrees, with completed degrees listed with the year of completion. After all, you don't put unfinished and abandoned papers on your CV either. No one in psychology will care about an abandoned degree in whatever that you tried way back when.