Qualities of the unreal

Area of Science:

• Cognitive Psychology
• Memory Studies
• Forensic Psychology

Background:

• Witnesses to complex events may develop false memories from misleading post-event information.
• Distinguishing between real and suggested memories is crucial in legal and everyday contexts.

Purpose of the Study:

• To investigate if verbal descriptions of "unreal" (suggested) memories differ from those of perceived memories.
• To assess the ability of judges to discriminate between perceived and suggested memory descriptions.
• To determine if instructions can improve the detection of memory source.

Main Methods:

• Subjects viewed a slide sequence of a traffic accident, with a "yield" sign either present or suggested.
• Verbal descriptions of memory recall were collected and analyzed for content and linguistic features.
• Judges were tasked with discriminating the source (perception vs. suggestion) of memory descriptions, with and without additional clues.

Main Results:

• Descriptions from suggested memories were longer, used more hedges and cognitive operation references, and fewer sensory details compared to perceived memories.
• Judges' ability to discriminate memory sources was only slightly better than chance.
• Providing judges with specific clues significantly improved their ability to differentiate between perceived and suggested memory descriptions.

Conclusions:

• Subtle but detectable differences exist between perceived and suggested memories.
• Humans possess a limited innate ability to identify the source of memories.
• Explicit instructions and criteria can enhance the accuracy of distinguishing between perceived and suggested memories.