What the exam asks
- Concept Application (MCQ & EBQ): Identifying whether a memory lapse stems from encoding failure, interference, or a retrieval block, and applying constructive memory concepts (like the misinformation effect or source amnesia) to real-world or legal scenarios.
- Data Interpretation (MCQ & AAQ): Reading graphs of the forgetting curve to describe the rate of memory decay over time.
- Argumentation (EBQ): Using research summaries on eyewitness testimony or false memories to support a claim and linking that evidence to psychological concepts like imagination inflation.
Core ideas
The Forgetting Curve and Encoding Failure
Hermann Ebbinghaus pioneered the study of memory decay by memorizing lists of nonsense syllables. His forgetting curve demonstrates a universal pattern: forgetting occurs rapidly immediately after learning, and then levels off over time—meaning whatever information survives the initial drop remains relatively stable in long-term storage.
Sometimes we cannot remember something simply because we never stored it in the first place. Encoding failure occurs when information in sensory or working memory never enters long-term memory, usually due to divided attention or lack of effortful processing. For example, you have seen a standard coin thousands of times, yet you probably cannot draw the exact direction the profile faces because you never needed to encode that detail.
Retrieval Failures and Interference
Even when information is safely stored, it can become inaccessible.
- Tip-of-the-tongue phenomenon: A temporary inadequate retrieval state where you are confident you know a word or name and can often recall its first letter or syllable count, but cannot quite pull the complete memory into consciousness due to insufficient retrieval cues.
- Repression (Psychodynamic perspective): According to psychodynamic theory, the mind can unconsciously block distressful or anxiety-provoking memories from entering conscious awareness to defend the ego. (Note: Modern cognitive psychologists find that high-stress events are usually vividly remembered rather than repressed.)
- Interference: Competing memories in storage disrupt the retrieval of the target memory.