Marla is talking to a friend and spreading a rumor that she heard about a co-worker. When the friend asks where she heard the rumor, Marla cannot remember. Marla is experiencing what psychologists call

1)retrograde amnesia.
2)anterograde amnesia.
3)source amnesia.
4)stress amnesia.

Often we remember a message but cannot remember the source of the message. However, I have never heard the term, "source amnesia." This term may have been more recently coined after my training.

source

anterograde amnesia

Marla is experiencing what psychologists call source amnesia. Source amnesia is the inability to remember where or when a piece of information was acquired, while still retaining the knowledge itself. In this case, Marla is unable to recall where she heard the rumor about her co-worker, but she is still able to remember and spread the rumor itself. So, the correct answer is 3) source amnesia.