Any type of memory remembered outside of therapy, you could just about cite as accurate. Any memory remembered within therapy, or pieced together within therapy, you could just about cite as inaccurate, because the memory was led towards a topic, you didn't just remember.
Its like saying, was there a pink elephant that you saw? Just asking that question, your brain now has gone searching for pink elephant and even pictured it. This is the most basic explanation for leading questions in therapy that can induce false memories.
If you walked into your therapists office, told them what you remember, then they began exploring specifics of a memory, lets say... you told them you were in the basement, you remember 3 boys, only one of their faces, two names, a distinguishing mark and that you were naked and so where they. That's it... that is all your brain actually remembers, without being deceptive and secretive, your brain physically only remembers that specific detail.
Now, the therapist asks... did the boys touch you? That question immediately led your brain to abuse, and to an assumption that you were all naked, so you answer yes, even though you have no actual physical memory of them touching you, the therapist just led you to say they did.
The therapist should have asked a non-leading question, such as... what happened next, or , do you remember anything else about that event... the list is long where the therapist could ask questions that do not imply a thing or lead you towards an answer. I the therapist leads you, then that is memory implantation, because you didn't have the memory, the therapist asked you if something happened, which you cannot remember, but answered yes... so now the leading questions continue and you build a completely false scenario based on assumption. Therapist do this because their idiots... they want to make the client think they are worth the money, they want to make themselves feel good that they helped you remember, they think their helping you to have a story of an event.
All false memories.
Now... if the therapist was any good, they would simply poke you with specific non-leading questions to get your brain thinking, to provoke it into reviewing the past event. When you leave therapy, then suddenly you begin having memories, snippets, of events that occurred around the previous snippets you had. These would be real memories, because at no stage did the therapist lead or implant thoughts into your head, they merely poked at the right places with non-leading questions to invoke your brain into thinking about a specific time. If the memories are there, your brain will flash them to you over the course of days / weeks, which you will then continue to raise in therapy and possibly building a more complete picture of the event, yet you will not EVER remember every detail like a running movie.
These are all absolute NO-NO's in every type of therapeutic training, yet individuals think they know better, or simply don't even think that something they said is leading... yet it is, and instead got lost in themselves trying to help, but actually are doing more damage than good.