Understanding Interference Theory

The page delves into the fundamental concepts of interference theory of forgetting and its supporting research.

Definition: Interference theory occurs when two pieces of information disrupt each other, primarily affecting long-term memory.

Types of Interference:

Vocabulary:

• Proactive interference (PI): When older memories interfere with newer ones
• Retroactive interference (RI): When newer memories interfere with older ones

Research Evidence:

Example: McGeoch and McDonald's 1931 study demonstrated that similar materials (synonyms) produced the worst recall, supporting that interference is strongest between similar memories.

Strengths of the Theory:

Highlight:

• Drug studies support the theory through retrograde facilitation
• Real-world evidence from studies with rugby players increases ecological validity
• Interference effects can be overcome using proper memory cues

Limitations:

Highlight:

• Laboratory studies may create artificially ideal conditions
• Interference might be less common in everyday situations
• Most forgetting might be better explained by alternative theories

Supporting Research:

Quote: "Coenen and Van Luijtelaar (1997) found that recall of words learned under diazepam was poorer than the placebo control group, while recall of material learned before drug administration was better."

Memory Accessibility:

Example: Tulving and Psotka's research showed that category cues could restore recall levels to around 70%, suggesting interference causes temporary accessibility issues rather than permanent loss.