Conditions for positive and negative recencies in running memory-span recognition.

Area of Science:

• Cognitive Psychology
• Human Memory
• Attention Studies

Background:

• Recency effects, where recent items are better recalled, are a key feature of human memory.
• Existing models struggle to explain recency effects in continuous memory tasks like running recall.
• The role of attentional resource allocation in modulating recency effects requires further investigation.

Purpose of the Study:

• To investigate the conditions under which positive and negative recency effects manifest in recognition memory.
• To test the hypothesis that attentional resource sharing influences recency effects in memory tasks.
• To differentiate between running span recognition and running recall procedures regarding recency effects.

Main Methods:

• Four experiments were conducted using running-span and running recall procedures.
• Varying memory set sizes and presentation cues were employed.
• Participants performed recognition tasks after viewing sequences of items.
• Response times and accuracy were recorded to assess memory performance.

Main Results:

• A positive recency effect was observed in a standard running-span recognition task.
• Eliminating the start cue in Experiment 2 abolished recency effects.
• Forced maintenance of memory items with uncertain list lengths in Experiments 3 and 4 produced a negative recency effect.

Conclusions:

• Recency effects are sensitive to experimental manipulations that alter memory updating and attentional focus.
• The shift from positive to negative recency suggests a role for shared attentional resources when memory load is high and uncertain.
• Findings support attentional resource models for explaining dynamic changes in memory performance within continuous tasks.