Oddly Wired
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memory

You can remember events that never actually happened.

Leading questions can bias eyewitness testimony and retrospectively influence how events are reported.

Whether these questions cause a permanent alteration of the original memory trace, or simply overlay a new memory, remains a subject of active debate in cognitive psychology.

Your memory is not a recording, but a story you keep rewriting.

Where this comes from

Study
Loftus and Palmer (1974)
What the check found
Loftus and Palmer (1974) demonstrated that leading questions alter estimates and witness responses, but whether this constitutes a permanent erasure or alteration of the original memory trace is a theoretical interpretation, not an empirical fact.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.