He uses the process of context-dependent memory to his advantage by taking witnesses back to the crime scene.
The tangible evidence discovered at crime scenes can help in criminal investigations. Law enforcement and crime scene investigators (CSIs) collect this information. The scene of a crime may be the exact location where the incident took place or another location where there is evidence connecting the crime to the scene. Scenes don't simply have to be actual locations; they can also be any person, place, or object linked to the unlawful activities that occurred.
When environmental contextual cues are constant between encoding and retrieval, a memory that is context-dependent refers to improved recall of specific events or information. An intriguing experiment by Godden and Baddeley (1975) demonstrates the significance of the retrieval environment.
When the context present at encoding and retrieval is the same, context-dependent memory aids individuals in remembering certain events or bits of information better. Without finding a better way to put it, "contextual information is kept together with memory targets when events are stored in memory; the context might therefore awaken memories incorporating that contextual information."
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