Memory: encoding, stores and levels of processing
Separate encoding, storage and retrieval, compare the three levels of processing and apply the encoding-specificity principle.
Original teaching mapped to Cambridge IGCSE Psychology 0266 Version 3 for 2027–2029. The course is independent study support, not Cambridge material, an official mark scheme or an awarded grade. Named-study notes summarise the required findings; candidates are not expected to evaluate named studies. Self-check practice is not official grading, a timed Paper 1/2 simulator or teacher review.
Before you begin
- Use the Version 3 syllabus and confirm availability in your administrative zone with Cambridge and your school. Both papers are compulsory. The updated named-study summaries are required context; full original research articles are not required.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Before memory: encoding, stores and levels of processing, which approach is most useful?
What you will learn
- Distinguish encoding, storage and retrieval
- Compare structural, phonemic and semantic processing
- Use Craik and Tulving’s Experiment 2 and explain a limitation of the model
- Apply encoding specificity to a new example
Memory is a process, not a single action
Encoding changes incoming information into a form that can be retained; storage keeps it over time; retrieval brings it back into use. A store can be described by its input, capacity, duration and access. Declarative memories are consciously recalled facts or events; procedural memories concern how to perform an action.
Forgetting means being unable to remember previously learned information. Retrograde amnesia affects memories from before an injury or illness; anterograde amnesia affects formation of new memories afterwards.
Meaningful encoding tends to leave a stronger trace
Craik and Lockhart treat storage as a by-product of processing. Structural processing attends to appearance, phonemic processing to sound and semantic processing to meaning. The model does not explain how memory capacity is limited, so it should not be used as a complete account of memory.
A useful cue matches the way information was encoded
Encoding specificity predicts better recall when a retrieval cue or context resembles the conditions present during learning. This is about a match between learning and recall cues, not simply making every cue more meaningful.
Named study: Craik and Tulving, Experiment 2
The researchers asked 24 college students yes/no questions that directed attention to the appearance, sound or meaning of common words; later, students recognised studied words among distractors. Recognition was highest after meaning-focused questions, then sound-focused questions, and lowest after appearance-focused questions. The result supports deeper semantic processing, while the model still leaves limited capacity unexplained.
Pause and explain
Which response best shows understanding of memory: encoding, stores and levels of processing?
Worked example
A learner remembers a word more easily after writing a meaningful sentence with it. Which idea explains this?
Show the worked solution
- The learner linked the word to its meaning rather than only its appearance or sound.
- That is semantic processing.
- The LoP model predicts stronger later memory after this deeper encoding.
Answer Semantic processing is likely to support stronger memory than focusing only on the word’s shape.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A student sorts terms by meaning and links each to an example. Identify the processing level and explain the predicted memory effect.
Give me a hint
Name what the student is attending to.
Compare my reasoning
- The student is attending to meaning.
- This is semantic processing.
- The LoP account predicts stronger recognition than processing only visual form.
Semantic processing; the meaning link should improve later recognition relative to structural processing.
Look for these in your work
- Identifies meaning
- Names semantic processing
- Explains the prediction
Classify a learner tracing the letters of a word without reading it for meaning.
Give me a hint
Focus on visual appearance.
Compare my reasoning
- The learner attends to the shape of the letters.
- No sound or meaning judgment is required.
- This is structural processing.
Structural processing.
Look for these in your work
- Uses the stated focus
- Distinguishes it from phonemic
- Gives a clear label
A student studies a route while listening to a distinctive song, then recalls it better when that song is replayed. Apply encoding specificity.
Give me a hint
Compare the cue at learning and recall.
Compare my reasoning
- The song was present during learning.
- The same song is supplied during recall.
- The matching context can act as a retrieval cue.
Recall may improve because the retrieval context matches a cue present during encoding.
Look for these in your work
- Identifies learning cue
- Identifies recall cue
- Connects the match to retrieval
Common mistakes
- Calling retrieval the same thing as storage.
- Saying semantic processing guarantees perfect memory.
- Claiming Craik and Tulving tested every version of the LoP model.
What can you explain now?
Which level focuses on a word’s meaning?
Compare with the explanation
Semantic
Structural focuses on appearance; phonemic on sound; semantic on meaning.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
How do encoding, processing depth and retrieval cues affect what can be recalled?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.