Researchers at Louisiana State University examined two kinds of lies- false descriptions and false denials - and the different cognitive machinery that we use to record and retrieve them.
Associate Professor Sean Lane explained that false descriptions remain more accessible and more durable in our memories because they tax our cognitive power.
"As the constructive process lays down records of our details and descriptions, it also lays down information about the process of construction," Lane said.
False descriptions take work. We remember them well precisely because of the effort required to make them up. When subjects in Lane's study were asked to recall their own false descriptions 48 hours later, their memories were largely accurate.
However, the same is not true for false denials. This kind of lie- denying something that actually happened- is often brief, and its cognitive demand is therefore much smaller.
Lane also cited the "illusory truth effect," the idea that hearing false information repeatedly will make it seem truthful, simply because it's familiar. His study takes this idea in a new direction.
The study is publication in the Journal of Applied Research and Memory Cognition.
--ANI (Posted on 05-09-2013)