AP Syllabus focus:
‘Memory includes explicit memories, implicit procedural memories, and prospective memories for future actions.’
Memory is not a single system.
AP Psychology distinguishes memories you can consciously describe, memories expressed through skilled action without awareness, and memories for intentions you must carry out later.
Core Types of Memory
Explicit (Declarative) Memory
Explicit memory involves information you can consciously retrieve and verbally report (e.g., facts and personally experienced events).
Explicit (declarative) memory: consciously accessible memory for facts and events that can be stated (“declared”) in words.
Explicit memory is commonly divided into:
Episodic memory: memory for personally experienced events (the “episodes” of your life), often tied to time and place.
Semantic memory: memory for general knowledge and meanings (concepts, vocabulary, historical facts) not bound to a specific personal episode.
Key AP emphasis:
This figure depicts memory as a three-part information-processing sequence: encoding (getting information in), storage (maintaining it over time), and retrieval (bringing it back into awareness). It helps explain why explicit (declarative) memory is often assessed with recall and recognition tasks—both are forms of retrieval. The diagram also provides a framework for thinking about where breakdowns can occur (e.g., poor encoding vs. retrieval failure). Source
Explicit memories are typically tested with tasks requiring conscious recall (producing information) or recognition (identifying previously learned information).
Implicit (Nondeclarative/Procedural) Memory
Implicit memory influences behavior without conscious awareness that you are remembering. The syllabus highlights implicit procedural memories—how to perform skills and actions.
Implicit (nondeclarative) memory: memory that affects thoughts or behaviour without conscious awareness of remembering.
A major subtype is procedural memory:
Procedural memory: implicit memory for skills and habits, shown through performance (e.g., writing, typing, sport techniques) rather than conscious description.
Important features:
Often revealed by performance (doing) rather than reporting (saying).
Can operate even when people have difficulty articulating “how” they know what to do.
Tends to be supported by practice and repetition, becoming more automatic over time.
Prospective Memory (Remembering to Remember)
Prospective memory is memory for future actions—remembering to carry out an intended behaviour at the right moment.
Prospective memory: memory for intended actions that must be performed in the future (“remembering to remember”).
Prospective memory typically involves:
Forming an intention (deciding to do something later).
Maintaining the intention while attention is on other tasks.
Detecting the appropriate cue (a time or event that signals “do it now”).
Executing the action (carrying out the plan).
Common forms:
Event-based: triggered by an external cue (e.g., “when I see my teacher, give them the form”).
Time-based: triggered by a time target (e.g., “at 7:00 p.m., send the email”), often requiring more self-monitoring because the cue may be less salient.
Comparing the Three for AP Psychology
Conscious access and how memory is shown
Explicit: conscious; shown by describing information.
Implicit procedural: not consciously accessed; shown by skilled performance.
Prospective: future-oriented; shown by carrying out an intention at the right time or situation.
What students should be able to do with these terms
Correctly label a scenario as explicit, implicit procedural, or prospective based on whether the person is consciously recalling, demonstrating a skill, or remembering a future intention.
Use precise language: explicit = conscious declaration, procedural = skill performance, prospective = future intention.
FAQ
They use indirect tests where prior experience changes performance, such as faster skill execution or improved accuracy after practice, without requiring the person to state what they remember.
Time-based relies on noticing the time and self-monitoring; event-based relies on an external cue. Time-based is often harder because cues are less obvious.
Common reasons include weak cues, divided attention, interruptions, and competing goals. Prospective memory often fails at the cue-detection or execution stage.
Yes. Helpful approaches include:
Implementation intentions (“If X happens, I will do Y”)
External reminders (alarms, notes)
Making cues more distinctive and visible
Not always. Stress can reduce conscious, detailed remembering and disrupt cue monitoring, while well-practised skills may be more resilient—though very high stress can still impair performance.
Practice Questions
Distinguish between explicit memory and implicit procedural memory. (2 marks)
1 mark: Explicit memory is consciously accessible and can be verbally reported (facts/events).
1 mark: Implicit procedural memory is shown through performance of skills/habits without conscious awareness.
Explain prospective memory and describe two ways it differs from explicit memory. (5 marks)
1 mark: Defines prospective memory as remembering to carry out an intended action in the future.
1 mark: Notes it involves retrieving an intention at the appropriate time/event cue.
1 mark: Difference 1: prospective is future-oriented (intentions), explicit is past-/knowledge-oriented (facts/events).
1 mark: Difference 2: prospective success is demonstrated by completing an action, explicit by verbal recall/recognition.
1 mark: Additional accurate detail (e.g., event-based vs time-based prospective memory, or the need for monitoring in time-based tasks).
